Wednesday

October 22, 2014

October 22, 2014

Number of results: 28,707

**maths**

a cylindrical cake with radius 12cm and height 10cm has a slice cut out. The shape of the top of the slice is a sector of the circle that forms the top of the cake. Exluding the sliced piece, the angle is 320 degrees. a) Calculate the area on top of the slice that has been cut...
*April 22, 2010 by Anonymous*

**maths**

a cylindrical cake with radius 12cm and height 10cm has a slice cut out. The shape of the top of the slice is a sector of the circle that forms the top of the cake. Exluding the sliced piece, the angle is 320 degrees. a) Calculate the area on top of the slice that has been cut...
*April 22, 2010 by anonymous*

**college physics**

An 80kg man walks down a ramp that makes a 40 degree angle with the horizontal. By how much does his gravitational potential energy change (in kJ) when he walks 15m down the ramp?
*June 24, 2010 by neosha*

**Calculus-concave up and down**

Can someone explain this question to me? What intervals should I use to test whether or not the graph is concave up or down. Here is the URL for the graph. imgur dotcom/FdQCV
*March 1, 2012 by Melinda*

**Physics**

A proton is traveling horizontally at 5.4 × 106 m/s in a direction 45o north of west. A magnetic flux density has a magnitude of 0.25 T and is directed north. What is the force on the proton? Answer 1.5 × 10-13 N, up 2.1 × 10-13 N, down 1.5 × 10-13 N, down 2.1 × 10-13 N, up
*July 16, 2013 by tom*

**Trig**

From a point P on level ground, the angle of elevation of the top of a tower is 27°10'. From a point 23.0 meters closer to the tower and on the same line with P and the base of the tower, the angle of elevation of the top is 51°30'. Approximate the height of the tower. (Round ...
*June 26, 2012 by Bob*

**chemistry**

the Ka for acetic acid, HC2H3O2, is 1.8x10-5 at 25 deg. Celsius. In a .10 M solution of potassium acetate, which of the following are true? I. [HC2H3O2] = [OH-] II. [H+] = [OH-] III. [C2H3O2-] < .10 M a. I only b. II only c. III only d. I and II e. I, II and III What is ...
*April 22, 2007 by Anonymous*

**plane and trigonometry **

a 30 foot flagstaff is fixed in the center of a circular tower 40 feet in diameter. from a point in the same horizontal plane as the foot of the tower the angles of elevation of the top of the flagstaff and the top of the tower is 30 degree repectively. find the height of the ...
*July 16, 2013 by rhen songalia*

**Physics**

Solar heating takes advantage of solar collectors such as the type shown in the figure . During daylight hours, the average intensity of solar radiation at the top of the atmosphere is about 1400 W/m^2. About 50% of this radiation reaches the Earth during daylight hours. (The ...
*May 7, 2011 by Alice*

**physics**

1) A jogger runs directly east for 5 km, then turns and goes northwest for 7 km. He then travels directly south for 5 km. How far is he from the starting point? (km) 2) In what direction is he from the starting point(measured as an angle counterwise from the east axis, units ...
*June 6, 2011 by tank*

**Math**

A ladder is two feet longer than the height of a certain wall. When the top of the ladder is placed against the top of the wall, the distance from the base of the ladder to the bottom of the wall is equal to the height of the wall. How high is the wall?
*November 30, 2010 by Naomi*

**Physics**

A brick is thrown vertically upward with an initial speed of 3.00 m/s from the roof of a building. If the building is 78.4 m tall, how much time passes before the brick lands on the ground? I think I may have gotten part of this question by first calculating how long it takes ...
*February 13, 2011 by Julia*

**physics**

Air streams horizontally past a small airplane's wings such that the speed is 70.0m/s over the top surface and 60.0m/s past the bottom surface. If the plane has a wing area of 16.2m^2 on the top and on the bottom, what is the net vertical force that the air exerts on the ...
*January 29, 2009 by Jaime*

**Engineering Physics**

You want to use a spring (k=100 N/m) to send a 500-g mass up a frictionless incline (30 degree to horizontal) to arrive at a platform 3m above the ground. How far should you compress the spring?
*July 1, 2012 by John*

**Engineering Physics**

You want to use a spring (k=100 N/m) to send a 500-g mass up a frictionless incline (30 degree to horizontal) to arrive at a platform 3m above the ground. How far should you compress the spring?
*July 1, 2012 by John*

**physics**

How far would a car of 126 horse power have gone when it attains a speed of 70 km/hour going up the hill with 15 degrees incline. Total weight of the car is 1338 kg
*January 22, 2014 by adi*

**geometry**

chung ho is standing on the top of a building that is 135m tall. The angle of depression to the top of the building next door is 71 degrees. The angle to the base of the building is 77 degrees. The buildings are 31m apart. How tall is the other building? thanks for your help.
*March 1, 2012 by Math*

**Physics**

A 46.5-cm diameter disk rotates with a constant angular acceleration of 2.4 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. (Hint: Remember the...
*November 30, 2009 by Ed*

**physics**

a 1200 kg car going 30 m/s applies its brakes and skids to rest. if the friction force between the sliding ires and the pavement is 6000 N, how far does the car skid before coming to rest. I know the ans is 90 m what work/energy formula should i use to get this answer? can you...
*February 11, 2010 by edwin*

**calculus**

Consider the exponential function . Which of the following best describes the the graph of g? a. Concave up and increasing b. Concave up and decreasing c. Concave down and increasing d. Concave down and decreasing The rules are +constant, concave up, - constant concave down. ...
*September 5, 2006 by Joshua*

**Physics**

A centrifuge rotor rotating at 10700 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 2.48 m * N. 1. If the mass of the rotor is 5.61 kg and it can be approximated as a solid cylinder of radius 0.0820 m, through how many revolutions will ...
*November 22, 2010 by Nick*

**Dynamics**

a flywheel has an angular speed of 1200rev/min when its motor is turned off.the wheel attains constant decelerations of 1.5rad/s2 due to friction in its bearing.determine the time required for the wheel to come to rest and the numer of revolutions the wheel makes before it ...
*August 1, 2012 by sanjeev kumar*

**physics**

If a mass attached to the center of a vertical circle swings around at a fixed speed (v) and gravity pulls straight downward, would the tensions in the rope attached to the mass be different at the top of the circle, straight down to bottom of circle, and directly straight out...
*November 22, 2009 by Maggie*

**physics**

Billiard ball A of mass m_A = 0.130 kg moving with speed v_A = 2.50 m/s strikes ball B, initially at rest, of mass m_B = 0.145 kg. As a result of the collision, ball A is deflected off at an angle of 31.0 degree, with a speed v_A1 = 2.05 m/s. Write down the equation expressing...
*April 24, 2012 by Caylee*

**Physics**

Do Newton's Law apply to motion inside your car? A.Yes, but only when at rest. B.Yes, but only when traveling at constant velocity or at rest. C.No, never. D.Yes, always. So I tried answering the question with D at first because I was thinking that it is a car in motion so ...
*July 8, 2014 by Sophie*

**Physics**

From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The initial speed of the pebble is 7.56 m/s. (a) What is the acceleration (magnitude and direction) of the pebble during the downward motion? (b) After 0.950...
*September 26, 2014 by Anonymous*

**Python programming**

1,000 students took an online course. 1/4th of them were from Africa, 1/4th from Europe , 1/4th from South America, and 1/4th from Asia. At the end of the course, the instructor observed that of the top 100 grades, 30 belonged to students from a single geographical area. He ...
*January 13, 2013 by Anonymous*

**physics**

A winch is used to frag a 375 N crate up a ramp at a constant speed of 0.75 m/s by means of a rope that pulls parallel to surface of the ramp. The rope slopes at 33 deg. above the horizontal, and the coefficient of kinetic friction between the ramp and the crate is 0.25. (a) ...
*October 24, 2011 by juniper*

**physics**

A rock accelerates 3m/s/s down a ramp. How long will it take for the rock to increase its speed from 2m/s to 17m/s down the ramp?
*October 6, 2011 by cj*

**physics**

Consider a rocket in space that ejects burned fuel at a speed of vex= 2.0 km/s with respect to the rocket. The rocket burns 10 % of its mass in 340 s (assume the burn rate is constant). (a) What is the speed v of the rocket after a burn time of 170.0 s? (suppose that the ...
*December 6, 2013 by anonymous*

**cook**

what kitchen utensil or equipment starts with the letter "A"
*March 24, 2008 by Joseph*

**english**

the sum of many parts that starts with a c and eands with an o and has an L in the middle
*October 8, 2008 by Aj*

**spelling**

a word for a person who helps people that starts with a
*October 27, 2009 by desead*

**writing**

what is a word describing school that starts with the letter k?
*April 19, 2010 by sudipa*

**Science**

What is the name for the study of sound. It starts with an e i think.
*September 1, 2011 by Adam*

**Science**

Where the animal first starts to deposit fat?
*February 27, 2012 by Jenny*

**physics**

9. A stone is thrown at an angle of 30° above the horizontal from the top edge of a cliff with an initial speed of 19.6 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 6.7 s. How far out from the cliff's edge does the stone travel ...
*June 10, 2010 by sam*

**physics**

A silver wire has resistance of 2.1ohms at 27.8 degree celsius and resistance of 2.8ohms at 98 degree celsius. Determine the temperature coefficient of resistance of silver wire and its resistance at zero deg.
*March 16, 2010 by Edwin*

**math**

angle of elevation of the top of a mountain to a man is 45degree.if we walk along a slope of 30 degree of the mountain 100 meters then the angle of elevation of the top of mountain becomes 60 degree.find the height of the mountain.
*August 8, 2010 by subhradeep*

**Math**

a building is 16m from a television tower. From the top of the building, the angle of depression from the base 43 degrees, and the angle of elevation to the top of the tower is 24 degrees. Find the height of the tower?
*July 25, 2014 by Cuyahon*

**business**

evaluate the extent that management utilizes the classic management activities -planning, organizing, leading, and controlling with 4-6 slides with notes and references
*May 8, 2008 by tyrane*

**physics**

A shuffle board table is 5 feet tall. A puck slides off the table at 2 m/s. How far across the room does it travel in 1 second ?
*February 15, 2012 by steve o*

**physics**

a box of mass 5.7 kg slides across a floor and comes to a complete stop. if its initial speed was 10km/h and mu = 0.34 find the acceleration of the box
*June 24, 2013 by ashley*

**physics**

A physics book slides off a horizontal tabletop with a speed of 1.10m/s{\rm m}/{\rm s} . It strikes the floor in 0.350s{\rm s} . Ignore air resistance.
*May 17, 2014 by joe*

**Science URGENT**

Write down the number of hydrogen and oxygen atoms of the following H2O 3H2O 5H2O Write down the number of carbon, hydrogen and oxygen atoms: C6H12O6 2C6H12O6 10C6H12O6 Write down the number of molybdenum, oxygen and hydrogen atoms: Mo(OH)4 3Mo(OH)4 5Mo(OH)4 Write the Number ...
*March 27, 2014 by Madhu*

**Phsyics**

Can someone give me some pointers on calculating the rest energy of a positron (a particle that has the same mass as an electron and equal but opposite charge) ? thanks The rest energy is equal to the mass times the speed of light squared.
*May 24, 2007 by Jess*

**MEchanics M-1 (Velovity time graphs)**

A dragonfly, at rest on a bullrush, decides to fly to a second bullrush 18 m away. It accelerates uniformly to a speed of. 5 m s-1, then immediately decelerates uniformly to rest on the second bulrish. Howlong the journey took?
*March 9, 2013 by Tony*

**Physics**

An object is dropped from rest from the top of a 400 m cliff on Earth. If air resistance is negligible, what is the distance the object travels during the first 6s of its fall? a)30m b)60m c)120m d)180m e)360m I got a) as my answer. I used x-x_i = v_i * t +1/2at x-400= 0(6) + ...
*December 28, 2006 by me*

**Physics**

A block of mass m is attached to a string and suspended inside an otherwise empty box of mass M. The box rests on a scale that measures the system’s weight. (a) If the string breaks, does the reading on the scale change? Explain your reasoning. (b) Assume that the string ...
*September 29, 2010 by Lynda*

**Socials**

Temperature decreases approximately 1degree Celsius for each 150 metres increase in altitude. 1. The temp at sea level is 25 degree Celsius A.) what will the temp be 1200m up the mountain? B.) what will it be at the top? (2250m) 2. The temp at the top of the mountain is ...
*February 17, 2014 by Roma*

**Physics**

rom the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The initial speed of the pebble is 7.56 m/s. (a) What is the acceleration (magnitude and direction) of the pebble during the downward motion? (b) After 0.950 ...
*September 29, 2014 by Candice*

**AYUDA**

a bungee jumper whit mass 65. kg jumps from a high bridge. after reaching his lowest point. he oscillates ud a down, hitting a low point eight more times in 38.0 s. he finally comes to rest 25.0 m below the level of the bridge. calculate the spring stiffness constant and the ...
*June 10, 2011 by Diego*

**algebra**

so the answer is 6 x6/y or 24 x6/y simplify:(3x0 ynegative 4)(2x2 y)3 this is hard to break down but i got 6x6/y but my sister said it could either be 24x6/y or 216x6/y6 if not any break it down and tell me which one is right thank u please keep it clear and simple so i can ...
*August 18, 2008 by Anonymous,*

**math**

Scott and Jen are looking at a house listed for 189000 dollars. They will qualify for a 6% interest rate if they have a 20% down payment. How much will the monthly payments be on a 15-year mortgage.I just don't understand what to do with the 20% down payment part please help ...
*April 17, 2013 by Phoebe*

**geometry**

An ant looks to the top of a bulding at an angle of elevation of 32°. The ant then walks an additional 66 feet from the edge of the building. If the new angle of elevation from the ant to the top of the building is 22°, find the height of the building. Round to the nearest tenth.
*January 17, 2014 by Lauren*

**chemistry**

a block of aluminum is placed in 10.0g of water. the initial temperature of the water is 22.0 degrees celcious and its final temperature is 27.0 degrees celcious. what is the amount of heat released by the block of aluminum in calories if it had an initial temperature of 48.0 ...
*April 30, 2013 by rachel*

**physics**

a 2.0 kg crate is incline at 60degrees and is held in equilibrium by a horizontal force.. what is the magnitude of this horizontal force? (disregard friction)
*December 6, 2008 by cookie monster*

**Physics**

An open-topped tank completely filled with water has a release valve near its bottom. The valve is 1.75m below the water surface. Water is released from the valve to power a turbine, which generates electricity. The area of the top of the tank, AT, is 11.5 times the cross-...
*September 3, 2014 by Santi*

**math**

Find (A upside down U B) upside down U C, given A = {s,e,t} B = {m,E} C = {f,r,e,e,}
*August 18, 2010 by Luke*

**Physics PLEASE**

I'm trying to solve this problem Calculate (a) how long it took King Kong to fall straight down form the top of the Empire State Building (380 m high), and (b) his velocity just before "landing". My teacher said try and rearagne this equation for t X = Xo + Vo t + 2^-1 a t^2 ...
*June 23, 2009 by Physics PLEASE*

**physics**

A 0.9 kg hollow ball with a radius of 0.12 m, filled with air, is released from rest at the bottom of a 2.0 m deep pool of water. How high above the water does the ball shoot upward? Neglect all frictional effects, and neglect the ball's motion when it is only partially ...
*December 10, 2006 by Jen*

**physics**

A lost shipping container is found resting on the ocean floor and completely submerged. The container is 5.7 m long, 2.7 m wide, and 2.3 m high. Salvage experts attach a spherical balloon to the top of the container and inflate it with air pumped down from the surface. When ...
*March 10, 2013 by chel*

**Physics**

A lost shipping container is found resting on the ocean floor and completely submerged. The container is 6.0 m long, 2.2 m wide, and 2.3 m high. Salvage experts attach a spherical balloon to the top of the container and inflate it with air pumped down from the surface. When ...
*April 19, 2014 by Linda*

**English**

What are the literary elements of this poem and what does it mean? Foundations Leopold Staff I built on the sand And it tumbled down, I built on a rock And it tumbled down. Now when I build, I shall begin With the smoke from the chimney.
*May 17, 2012 by Anonymous*

**english**

what would the tone of this poem be? serious? Foundations Leopold Staff I built on the sand And it tumbled down, I built on a rock And it tumbled down. Now when I build, I shall begin With the smoke from the chimney
*May 17, 2012 by Angela*

**science- help needed.**

each statement is false. rewrite each one as a true statement,showing as much scientific understand as possible. 1. light waves travel slower than sound waves. 2.a black object will reflect white light. 3.a translucent object lets no light through. 4.an orange object will ...
*November 30, 2008 by ruby127*

**physics**

The pole vault landing pad at an Olympic competition contains what is essentially a bag of air that compresses from its "resting" height of 1.1 m down to 0.1 m as the vaulter is slowed to a stop. (a) What is the time interval during which a vaulter who has just cleared a ...
*December 11, 2010 by student*

**physics**

3)A soldier throws a grenade horizontally from the top of a cliff. Which of the following curves best describes the path taken by the grenade? Parabola 4)A stone is thrown horizontally from the top of a 25.00-m cliff. The stone lands at a distance of 40.00 m from the edge of ...
*April 1, 2008 by Jon*

**Physics**

A child rides on a Ferris Wheel at the State Fair. The seat always faces to the right. There are three forces that act on the child,the child’s weight, W, the normal force of the seat,N, and the force of friction between the child and the seat, f. At which listed location(s) ...
*May 26, 2011 by Casey*

**Physics**

A 46.5-cm diameter disk rotates with a constant angular acceleration of 2.4 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. (Hint: Remember the...
*November 28, 2009 by Ed*

**physics**

have a question involving the spring costant: A 2-kg block is attached to a horizontal ideal spring with a spring constant of 200N/m. When the spring has its equilibrium length the block is given a speed of 5 m/s. What is the maximum elongation of the spring? The answer is ...
*November 5, 2006 by Diane*

**Math**

A weight attached to a spring is pulled down so that it is 10 cm from the floor and is released so that it bounces up and down. When the effects of friction and gravity are ignored. It's height can be modeled by a sine function of the time since it started bouncing. The weight...
*March 6, 2012 by Safaa*

**Math**

A weight attached to a spring is pulled down so that it is 10 cm from the floor and is released so that it bounces up and down. When the effects of friction and gravity are ignored. It's height can be modeled by a sine function of the time since it started bouncing. The weight...
*March 6, 2012 by Safaa*

**Physics**

Calculate the Patm And the pressure exerted by water on the block - The area Of the upper face of block is 40 cm2 Calculate the total pressure exerted on the solid Given : In the first tube : in a tube a solid .. the height from solid to the water level in the tube is 8o cm & ...
*April 23, 2010 by Nana*

**ap phyiscs**

A bowler throws a bowling ball of radius R=11 cm down a lane. The ball slides on the lane, with initial speed v(of the center of mass)=7 m/s and initial angular speed =0. The coefficient of kinetic friction between the ball and the lane is .25. The kinectic frictional force fk...
*February 10, 2008 by kristen*

**phyiscs**

How do I do these? Draw a free-body diagram for each of the following objects? a. a projectile in motion in the presence of air resistance b. a rocket leaving the launch pad with its engines operating c. a heavy crate being pushed across a rough surface a. mg is down, Ff is ...
*December 5, 2006 by Anonymous*

**Algebra**

Fomula: A=1/2(b1+b2)h A=area of a trapezoid b1=width at the top b2-width at the bottom h=height A 7-foor tall trapezoid has 42 square feet of area. If is is 9 feet wide at the bottom, how far across is it at the top?
*February 15, 2008 by G*

**physics **

A projectile launched straight upward at 141 m/s. How fast is it moving at the top of its trajectory? Suppose it is launched upward at 45° above the horizontal plane. How fast is it moving at the top of its curved trajectory?
*October 31, 2013 by Jessica*

**accounting**

using the equation A=L+OE how would you balance this problem: You buy acompany for $200,000 - Assets are land $50,000, building $130,000, equip $20,000. Took 70,000 from personal bank account to invest in business. Made a down payment of $40,000 and deposited the rest in the ...
*November 30, 2009 by sue*

**pop**

4. If your speeding car slams into a haystack and comes to rest, how will the IMPULSE that acts on it compare with slamming into a brick wall and coming to rest? A) The impulse will be more. B) The amount of impulse will be the same either way. C) The impulse will be less
*February 19, 2012 by Anonymous*

**calculus**

Given the position function of an object moving in a straight line, measured in meters, from the origin. Describe the motion in all phases throughout the duration of the motion from time t=0 to t=11 sec. s(t)=t^3 - 15t^2 + 50t State when the object is moving forward or ...
*March 7, 2010 by Anonymous*

**physics**

A toy top consists of a rod with a diameter of 13.00 mm and a disk of mass 0.0160 kg and a diameter of 3.5 cm. The moment of inertia of the rod can be neglected. The top is spun by wrapping a string around the rod and pulling it with a velocity that increases from zero to 3.0 ...
*January 10, 2013 by Anonymous*

**Math**

Three circular pipes with 30cm diamters are strapped together. Find the length of the strap to the nearest centimeter. I got the circumference of the circle which is 94.25cm but that's where i got stuck. Can you please help? you are wrong sorry to tell ya. the circumfrence of ...
*April 4, 2007 by Shay*

**Physics**

Please help me with these three questions. They deal with coefficient of friction 1) A car rounds a turn of radius 25m at a speed of 20m/s. Find the coefficient of friction neccessary to keep the car on the road 2) A man is attempting to slide a piece of furniture weighing ...
*January 27, 2010 by Bryian*

**Physics**

Please help me with these three questions,they deal with coefficient of friction 1) A car rounds a turn of radius 25m at a speed of 20m/s. Find the coefficient of friction neccessary to keep the car on the road 2) A man is attempting to slide a piece of furniture weighing 750N...
*January 27, 2010 by Bryian*

**psychics**

1. (a) A frictionless car of mass 1.5 tonnes travels uphill along a slope at 20º to the horizontal for 0.5 km at 20 km per hour. (i) How much work does the engine do on the car? (ii) What power does the engine supply? (b) The car the rolls back down the hill with the engine ...
*May 2, 2013 by Serkhref*

**Dynamics**

A flywheel has an angular speed of 1200 rev/min when its motor is turned off. The wheel attains constant decelerations of 1.5 rad/s2 due to friction in its bearing. Determine the time required for the wheel to come to rest and the number of revolutions the wheel makes before ...
*July 30, 2012 by Rajan*

**Physics**

A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the block is at the distance of .1m from equilibrium. Assume no friction between the block and the table. v=.157m/s KE =0J when x=.1m a)First I need to ...
*March 2, 2008 by Andrea*

**science**

Draw a free body diagram to show the relationship of forces on a 200 kg boulder resting on a 15degree incline. Include the magnitude of the force applied by an aadvark as it holds the boulder in place.
*May 3, 2012 by mona*

**Physics**

Hi, here's a problem that I have difficulty with to solve. Block M2, w/c has a 20 kg mass, is on a frictionless table and it is firmly attached to one end of a spring with k = 2.5 N/m. The other end of the spring is anchored to the wall. Another block, M1 (and of the same mass...
*November 2, 2011 by Chika*

**nutrition**

A cancer patient recieving chemotheraphy starts 8 weeks of tx weighting 171.5 lbs, with hist ht at 56.5 inches and his BMI at 27. Before he got sick his weight was 183lbs. On day 19 of tx hi had lost 3.5 lbs, on day 23 no wt loss, day 28 he had lost another 3 lbs. By day 38 ...
*March 19, 2008 by Liam*

**physics**

A crane lifts a concrete hopper of mass 370 kg from the ground to the top of a 38 m building that is under construction. The hopper moves with a constant speed during the lift. The power rating of the crane motor is 8.2 kiloWatts. How long does it take for the crane to lift ...
*February 20, 2011 by anonymous*

**physics**

Ten , one rupees coin are put on the top at of each other on a table. Each coin has a mass 'm'. Give the magnitude and direction of - (1)- The force of 7th coin (counted from bottom) due to all coins on its top. (2)- The force of 7th coin by 8th coin. (3)- The reaction of 6th ...
*October 14, 2014 by me*

**College Chemistry**

My professor gave us two homework questions that are a bit confusing, can you help me to get started on them. 1) You have 6g of water (Kf=1.86 C kg/mol). You add and dissolve 2.1 g of a different unknown substance. The freezing point of the solution is -0.3 deg C. What is the ...
*May 17, 2010 by Sarah*

**Physics**

I'm tyring to undersatnd uh motion of a particle at an incline on a ramp with a certain angle with the horizontal. the force pointing downwards is mg the force that is pointing upwards exerted by the ramp onto the the particle is the normal force which is not pointing ...
*July 11, 2009 by Physics*

**physics**

A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, and comes to rest some distance above the plunger. The plastic tube has an inner radius of 7.07 mm, and is frictionless. Neither the plunger nor...
*April 10, 2014 by Paige*

**physics**

A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, and comes to rest some distance above the plunger. The plastic tube has an inner radius of 7.07 mm, and is frictionless. Neither the plunger nor...
*April 10, 2014 by Paige*

**physics**

A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, and comes to rest some distance above the plunger. The plastic tube has an inner radius of 7.07 mm, and is frictionless. Neither the plunger nor...
*April 11, 2014 by Paige*

**physics**

A 1.2 kg block of ice is initially at a temperature of -5°C. (a) If 5.8 multiplied by 105 J of heat are added to the ice, what is the final temperature of the system? °C (b) Suppose the amount of heat added to the ice block is increased by a factor of 3.0. By what factor must ...
*November 22, 2008 by lyd*

**physics**

A 1.2 kg block of ice is initially at a temperature of -5°C. (a) If 5.8 multiplied by 105 J of heat are added to the ice, what is the final temperature of the system? °C (b) Suppose the amount of heat added to the ice block is increased by a factor of 3.0. By what factor must ...
*November 22, 2008 by lyd*

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