Post a New Question

A 3.00 kg block starts from rest at the top of a 27.0° incline and slides 2.00 m down the incline in 1.50 s.

36,855 results

physics
I recently did an experiment where I measured pressure at a few heights. The question I cam having trouble with is how to find the density of the air between the top and bottom. The difference in pressure from the top to bottom is 52.6 torr (692.5 to 745.1). The height of the ...

physics
a simple harmonic oscillator consists of a block of mass 2 kg attached to a spring of spring constant 100 N/m. when t=1 s, the position and velocity of the block are x=.129 m and v=3.415 m/s. A) what is the amplitude i figured that out and got sqrt(50) B) what is the position ...

PHYSICS( FRICTION)
A block of 1kg is kept on another block of 2kg in a horizontal surface. Coefficient of friction between two blocks is 0.4. The blocks are given velocities of 2m/s and 8m/s in same direction.The time when relative motion between them will stop =..???

physics - rotational motion
A small car of mass, m, is release at height, h, on a steel track. the car rolls down the track and through the loop of radius, R. at the end of the rack, the car rolls off the track, which is positioned at height, H, above the floor. neglect friction and the small amount of ...

physics
A ball moving in a vertical circle of radius 0.8 meters has a speed of 4 m/s at the top. To the nearest tenth what is its acceleration at the top?

physics
When a 1.50 kg block is 3.96 m above the base of the hill, the mass has a speed of 1.71 m/s. When the block reaches a point 0.750 m above the base of the hill, what is its kinetic energy?

Physics
A rectangular plank with mass m kilograms measures x metres wide by y metres high. It is clamped at its very left edge, one third of the way down from the top, as shown. To keep the plank level, the clamp must exert a torque of

Maths
x+2 2x-1 3 - 5 = 5 Note: x+2 is on top of 3 2x-1 is on top of 5 and they r like a fraction.

infinite geometric series
7. ‡” 8on top(-1/2)^n-1 n=1 8.‡” 8 on top 3(0.4)^n-1 n=1

Chemistry
Which of the following is the correct unit for specific heat? degree C*** Cal cal/g cal/(g*deg C)

Physics
A 2.0 x 103 kg car is pulled 345 m up a hill that make s an angle of 15° with the horizontal. What is the potential energy of the car at the top of the hill? If the car rolls down the hill, what will its speed be if we neglect friction? plz help? confused

Physics
A 2.0 x 103 kg car is pulled 345 m up a hill that make s an angle of 15° with the horizontal. What is the potential energy of the car at the top of the hill? If the car rolls down the hill, what will its speed be if we neglect friction? plz help? confused

Physics
A 2.0 x 103 kg car is pulled 345 m up a hill that make s an angle of 15° with the horizontal. What is the potential energy of the car at the top of the hill? If the car rolls down the hill, what will its speed be if we neglect friction? plz help? confused

Physical science
A ball rolls down a hill which has a vertical height of 15m .ignoring friction, what would be the (A)gravitation potential energy of the ball when it is at the top of the hill? (B)velocity of the ball when it reaches the bottom of the hill?

perimeter and area
the top of a giddy gizmo has an area of 25 square inches. the Gizmo's top is square. How long is each of the top's sides?

physics
A marble block of mass m1 = 500.1 kg and a granite block of mass m2 = 237.4 kg are connected to each other by a rope that runs over a pulley, as shown in the figure. Both blocks are located on inclined planes with angles á = 35.3 degrees and â = 56.7 degrees. Both blocks ...

physic
A particle is pushed horizontally by a constant horizontal force of magnitude F, which starts from the rest at x=0 in the positive ݔ direction. During the movement, it is also acted by the air resistance force that equivalent to bv, where b is the positive coefficient ...

Math
Hi! I need help with this question: Directions: Find the rest of the answers for the table and then find the estimate for it's limit. Problem: lim x→0 cos(3x-1)/3x Table: (top row) -0.1, -0,01, -0.001, 0.01, 0.1 (trying to find what the bottom would be for f(x) row.

physics # 9
9. A block attached to a spring of negligible mass undergoes simple harmonic motion on a frictionless horizontal surface. The potential energy of the system is zero at the equilibrium position and has a maximum value of 50 J. When the displacement of the block is half the ...

Physics SHM
Am self studying SHM, so sorry for the elementary questions. Would someone check/confirm some facts i think I've learned please. 1 If a sine wave graph starts at the origin at time = 0s, the sysyem is in equilibrium? 2 The amplitude at t= 0s is zero. 3 Same system, the phase ...

physics
1) a bullet of mass 0.02 kg is fired into a block of wood of mass 1.5 kg resting on a horizontal table. The block moves offwith an initial speed of 8 m/s. Estimate the speed with the bullet strikes the block. 2) The bullet in question 1 is fired from a rifle of mass 2.5 kg. ...

Physics
A block of mass m1 is connected to an empty bucket of mass 1.35 kg by a cord over a frictionless pulley. The coefficient of the static friction between the table and the block is 0.45 and the coefficient of kinetic friction between the table and the block is 0.32. Water is ...

Physics
A girl of 50 kg slides down a 8 m long slide into a pool. The upper end of the slide is 4.0 m above the water and the lower end of the slide is at the level of the water. Assume a coefficient of friction of 0.20, find: a) the potential energy of the girl at the start of her ...

physics
A mass m1 = 10 kg on top of a rough horizontal table surface is connected by a massless cable over a frictionless wheel to a hanging mass m2 = 5 kg, as shown in the previous problem. In m2 falls 1 m from rest in 1.2 seconds, find the co-efficient of kinetic friction between m1...

physics
1. A 12 kg wagon is being pulled at an angle of 38o above horizontal. What force is applied to the wagon if it accelerates from rest to a speed of 2.2 m/s over a distance of 3.4 m? (4 marks) 2. A 31.0 kg child on a swing reaches a maximum height of 1.92 m above their rest ...

math
at 7:00am joe starts jogging at 6 mi/h. at 7:10 am ken starts after him. how fast must ken run to overtake joe at 7:30am? If Joe runs at 6 mi/hr for 30 minutes (7:00 to 7:30), his distance traveled is 6 mi/hr x 0.5 hr = 3 miles. Ken starts at 7:10 and runs until 7:30 for a ...

chemistry
Will cooper based catalyst increase or decrease the cost of production process? And why? decrease the cost catalyst keeps costs down as it speeds up the reaction without the need for high temps and high pressures. If you are doing s103 its on page 86 block 8. Thank you very ...

physics
You live at the top of a steep (a slope of ???? degrees above the horizontal) hill and must park your 2200 kg car on the street at night. a) You unwisely leave your car out of gear one night and your handbrake fails. Assuming no significant frictional forces are acting on the ...

physics
Point A is at a potential of +240 V, and point B is at a potential of -160 V. An α-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral. An α-particle starts from rest at A and accelerates toward B. When the...

Physics
A dragster accelerates from rest for a distance of 450m at 14 m/s^2. A parachute is then used to slow it down to a stop if the parachute gives the dragster an acceleration of -7m/s^2 how far has the dragster traveled before stopping?

Physics
A dragster accelerates from rest for a distance of 450m at 14 m/s^2. A parachute is then used to slow it down to a stop if the parachute gives the dragster an acceleration of -7m/s^2 how far has the dragster traveled before stopping?

Physics
A dragster accelerates from rest for a distance of 450m at 14 m/s^2. A parachute is then used to slow it down to a stop if the parachute gives the dragster an acceleration of -7m/s^2 how far has the dragster traveled before stopping?

Physics
The blades in a blender rotate at a rate of 6500 rpm. When the motor is turned off during operation, the blades slow to rest in 2.6 s. 1. What is the angular acceleration as the blades slow down?

Physics
A .45 kg shuffleboard puck is given an initial velocity down the playing surface of 4.5 m/2. If the coefficient of friction between the puck and the surface is .2, how far will the puck slide before coming to rest?

MTE520 Maintaining an Effective Learning Climate
Second Grade Classroom Scenario As Miss Gibson’s second graders break out into their learning centers, a scuffle starts in the writing center. Two boys are shoving and pushing each other. Miss Gibson stops the class and yells, “Boys stop!” Instead of stopping, the boys ...

physics
Let a force of 1500 Newtons act through a distance of 200 meters on a 1500 kg car which starts from rest. a. What is the work done? b. What is the final velocity? c. What is the car's momentum? d. What is the car's change in momentum? e. What is the car's Kinetic Energy? f. ...

physics
A student with mass (72.0) kg rides on a roller coaster with a vertical loop. At the top of the loop the track has a radius of (23.7) m and the roller coaster moves at speed of (25.9) m/s at the top. Determine the normal force from the seat on the student at the top of the ...

Physics
A 75 kg pilot flies in her plane in a loop and notices that at the top of the loop, where the plane is completely uspside down for an instant, she hangs freely in her seat. the airspeed indecator reads 120m/sec. (a)what is the radius of the planes loop? (b) What is the ...

physics
Three blocks are in contact with each other on a frictionless horizontal surface. A 696 N horizontal force is applied to the block with mass of 4.7 kg as shown in the figure below. The acceleration of gravity is 9.8 m/s 2 . 4.7 kg 5.5 kg 7.1 kg d) What is the magnitude ...

Physics PLEASE HELP!
A bullet whose mass is 1.0 x 10-3 kg leaves a 5.0 kg rifle with a muzzle velocity of 1.0 x 103 m/s. It strikes a stationary block of wood whose mass is 1.0 kg and remains embedded in it. The kinetic energy of the bullet as it travels towards the wooden block is?

Physics
A box of mass 250 kg slides 4.6 m down an inclined plane of 31°. Jim pushes against the box to keep it from accelerating. The coefficient of kinetic friction between the box and the ramp is 0.41 (a) Calculate the magnitude of the force exerted by Jim. (b) Calculate the work ...

english
this is a portion of my english homework that i cant do. i was assigned over 100 questions and these are the ones i need the most help with and i need to turn it in in like an hour so any help would be great :-) 1. Which is not a sentence fragment? A. Because I knew she would ...

physics
Q2. A box rests on the (frictionless) bed of a truck. The truck driver starts the truck and accelerates forward. The box immediately starts to slide toward the rear of the truck. Discuss the motion of the box, in terms of Newton’s laws, as seen (a) by Mary standing on the ...

Math 11
The Colebeck's are purchasing a cottage for $120 000. They have a down payment of $20 000 and borrow the rest at 4.8%/a compounded monthly. If their monthly payments are $750 determine how long it takes them to pay off the loan?

physics- kinematics
General question- when do you use NEGATIVE for 9.8m/s^2? Even when the questions says "an object is thrown up in the air from top of the building, on its way down, it misses the building and falls to the ground below." If you do use a negative value, why is that?

algebra
a man rides up a ski lift at the rate of 5 miles per hour and skis back down the hill at the rate of 50miles an hour. if the complete trip requires 22 minutes, how far is it from the bottom to top of the hill?

physics 3
Static and Kinetic Friction: A 10 kg crate is at rest on a horizontal table (s =0.8, k =0.4). Then various amounts of horizontal pushing force are applied to it. a.) The largest pushing force that can be applied before the crate starts moving is of size: N b.)-d.) If the ...

General Physics I
A 50-N force acts on a 2-kg crate that starts from rest. When the force has been acting for 2 s the rate at which it is doing work is: I found this question online so I saw the answer is 2500 Watts. What I don't understand is how to come to this conclusion. Power = Work/time. ...

Grade 10 Science
A racevar accelerates from rest to a final speed of 250km/h. What is the average acceleration of the car? and John beings to walk faster and accelerates at a rate of 5km/h^2. How long did it take him to reach a top speed of 12 km/h? I didn't know how to use the formula because...

physics
(a) Just for fun, a person jumps from rest from the top of a cliff overlooking a lake. In falling through a distance H, she acquires a certain speed v. Assuming free-fall conditions, how much farther must she fall in order to acquire speed 2v? Express your answer in terms of H.

physics
Another scheme to catch the roadrunner has failed. A safe falls from rest the top of a 30.2 m high cliff toward Wiley Coyote, who is standing at the base. Wiley first notices the safe after it has fallen 17.4 m. How long does he have to get out of the way? The acceleration of ...

Science
What kind of Information can a Compound microscope provide? Much more information than I can type for the next three months. Blood cells, animal parts, leaf structures, snow flakes, and you get the idea. I was sick about two weeks when I was a child and we didn't know what was...

Physics
A 91 kg man stands on a spring scale in an elevator. Starting from rest, the eleva- tor ascends, attaining its maximum speed of 1.7 m/s in 1.07 s. It travels with this constant speed for the next 5 s, undergoes a uniform negative acceleration for 1.67 s, and comes to rest. ...

physic please check answers test tommoro
5) suppose in the previous question when timmy is sitting at rest he has 40j of GPE then his dad geves timmy a push when his dad lets go Timmy has 60j of GPE and 12J of KE a) befor his dad pushed him GPE= 40J Ke= 0J TE=40J b) immedialtey after his dad pushes him GPE= 60 KE= ...

Physics 112
Point A is at a potential of +270 V, and point B is at a potential of -130 V. An α-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral. An α-particle starts from rest at A and accelerates toward B. When the...

physics
1.A 910 kg racecar starts from rest and reaches a speed of 25.1 m/s in 0.48 s. a)What is the average acceleration of the racecar during this time period? b)What is the magnitude of the net force on the racecar? for a) I know: Mass= 910kg V=25.1m/s T=0.48s and I know to find A...

science ( physics)
hello, i am having trouble with this problem. Calculate the average force of friction acting on a wood block as it is propelled along the floor by an elastic band ? my solution and my ideas: What does it mean by average froce of friction? I first weighed the peice of wood to ...

Calculus
A man starts walking north at 4 ft/sec from point P. Five minutes later a woman starts walking south at 5 ft/sec from a point 500 ft due east of P. At what rate ae the people moving apart 15 minutes after the woman starts walking? Draw a diagram. 1) What rate is given? State ...

Physics/Math
A 3.0 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 18 N at an angle = 45° with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the right.) Calculate ...

Science
What You Call that Thing that is on top of the subway station were the whole dust and garbage is located on top of the train (where it passes through?????

Physics
Find the centripetal acceleration at the top of a test tube in a centrifuge, given that the top is 4.5 from the axis of rotation and that its linear speed is 76 .

Language Arts
if you say, "The book is on top of the big slide." would "on top of" be a compound preposition or is on and of two different prepositions? Thanks...

physical
Tarzan of mass 80kg swings from rest on a rope of length 10m that is horizontal when he starts at the bottom of his swing his speed is 14m.second he picks up jane sitting on the ground in an inelastic collision jane has a mass of 50kg they then swing upwards as one unit......

Geometry
The parallelogram has the angle measuers shown. Can you conclude that it is a rhombus, a rectangle, or a square? Explain. So I'm going to describe the image then I'll give what I think would be a correct answer to explain. (I'm really bad at this) Description: There's a ...

English
The mailperson's job is to put the envelop's in every mailbox on the block Word used in correct every Block Envelop's Mailperson's

Physics
A 64.7 kg astronaut is on a space walk away from the shuttle when her tether line breaks. She is able to throw her 14.1 kg oxygen tank away from the shuttle with a speed of 7.45m/s to propel herself back to the shuttle. Assuming that she starts from rest (rela- tive to the ...

Science
PLEASE HELP 1. Katie is bowling. She starts with the ball in her right hand and her arm as far back as it will go. She swings the ball forward, applying a force of 78 Newtons the whole time. When her hand has traveled through a path of 0.9 meters, she releases the ball, and it...

Englsh
1. Let's break up the wall. 2. Let's break the wall. (What is the difference between the two sentence?) 3. He wanted to get some rest. 4. He wanted to take some rest. (Are both OK? 5. He got rest after working hard. 6. He took a rest after wroking hard. (Do we have to use 'a' ...

Physics
A 0.45kg shuffleboard puck is given an initial velocity down the playing surface of 4.5 m/s. If the coefficient of friction between the puck and the surface is 0.20, how far will the puck slide before coming to rest?

Math
what is the value of the missing angle? (I don't know what you call this shape but its like drawing a house on paper but its upside down ex: the triangle is on the bottom and the square is on top. where the triangle is theres a number 140 on each side and the point part has a ...

Physics
A horizontal spring with K = 110 N/m has one end attached to the wall. A 250g block is pushed onto the free end, compressing the spring by 0.190 . The block is then released, and the spring launches it outward. Neglecting friction, what's its speed when it leaves the spring?

Geometry
A rectangular city block measures 105 by 88 meters.The city council wants to divide the block into two triangles of equal area. What is the length of the hypotenuse of each triangular area?( I already found the area of the whole rectangle and the area of each triangle)

Physics
Three identical blocks, A, B, and C, are on a horizontal frictionless table. The blocks are connected by strings of negligible mass, with block B between the other two blocks. If block C is pulled horizontally by a force of magnitude F = 28 N, find the tension in the string ...

physics
Three blocks are in contact with each other on a frictionless horizontal surface. A 696 N horizontal force is applied to the block with mass of 4.7 kg as shown in the figure below. The acceleration of gravity is 9.8 m/s 2 . 4.7 kg 5.5 kg 7.1 kg F a) What is the net force...

physics
Three blocks are in contact with each other on a frictionless horizontal surface. A 696 N horizontal force is applied to the block with mass of 4.7 kg as shown in the figure below. The acceleration of gravity is 9.8 m/s 2 . 4.7 kg 5.5 kg 7.1 kg ) What is the resultant ...

Physics
A block of mass 3.42 kg is drawn at constant speed a distance of 1.32 m along a horizontal floor by a rope exerting a constant force of magnitude 8.62 N and making an angle of 17.0 degrees above the horizontal. Compute the coefficient of friction between the block and the floor.

Physics
A block of mass 3.42 kg is drawn at constant speed a distance of 1.32 m along a horizontal floor by a rope exerting a constant force of magnitude 8.62 N and making an angle of 17.0 degrees above the horizontal. Compute the coefficient of friction between the block and the floor.

Physics
The figure below shows an initially stationary block of mass m on a floor. A force of magnitude F = 0.550mg is then applied at upward angle = 19°. (a) What is the magnitude of the acceleration of the block across the floor if the friction coefficients are μs = 0.595 and...

PHYSICS
super easy (I think) but I must be missing some concept... A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes 5.00 times around the track. Find the angle that the total acceleration of the car makes with the radius ...

physics
a circular hoop of mass and radius spins like a wheel rotating about its centre with moment of inertia. its period it T (1) find the kinetic energy in terms of the given parameters 2. if such a hoop rolls with its centre moving at velocity v show that it rolls down an inclined...

physics
a circular hoop of mass and radius spins like a wheel rotating about its centre with moment of inertia. its period it T (1) find the kinetic energy in terms of the given parameters 2. if such a hoop rolls with its centre moving at velocity v show that it rolls down an inclined...

Physics
a circular hoop of mass and radius spins like a wheel rotating about its centre with moment of inertia. its period it T (1) find the kinetic energy in terms of the given parameters 2. if such a hoop rolls with its centre moving at velocity v show that it rolls down an inclined...

Physics
A motor pushes a boat through the water with the force of 2100 N; the water creates a resistance force of 1800 N. What is the acceleration of 1200 kg boat? (Do I use force equals mass times acceleration? 2100=1200a) If it starts from rest how far will it move in 10 seconds? (...

Physics
frictionless block of mass 1.65 kg is attached to an ideal spring with force constant 340 N/m . At t=0 the spring is neither stretched nor compressed and the block is moving in the negative direction at a speed of 12.7 m/s . A-Find the amplitude. B-Find the phase angle. There ...

physics-speed
i need help with this one thanks A particle starts from rest and is acted on by a net force that does work at a rate that is proportional to the time t. The speed of the particle is proportional to: a. sq. root t b. t c. t^2 d.1/sq. root t e. 1/t Work done is proportional to ...

science
The position-time graph for a tennis ball thrown vertically upwards from the second floor of a school building is shown below.ignore all effects of air friction.The height of the second floor is 6,5m.The ball rises 0,9 m from the point of projection before it starts to fall to...

math
The problem describes a debt to be amortized. A man buys a house for $350,000. He makes a $150,000 down payment and amortizes the rest of the debt with semiannual payments over the next 12 years. The interest rate on the debt is 11%, compounded semiannually. (Round your ...

math
The problem describes a debt to be amortized. A man buys a house for $350,000. He makes a $150,000 down payment and amortizes the rest of the debt with semiannual payments over the next 12 years. The interest rate on the debt is 11%, compounded semiannually. (Round your ...

physics
A spring of stiffness 127 N/m, and with relaxed length 0.19 m, stands vertically on a table, as shown in the figure. Instead of compressing the spring with a heavy block, with your hand you push straight down on the spring until your hand is only 0.14 m above the table. (...

accounting
3. Managers would prefer a budget prepared______________________________. (Points : 1) by the budget committee utilizing the top-down approach utilizing the bottom-up approach utilizing none of the methods listed here

AP physics
Suppose a Chinook salmon needs to jump a waterfall that is 1.50 m high. If the fish starts from a distance 1.00 m from the base of the ledge over which the waterfall flows, find the x- and y-components of the initial velocity the salmon would need to just reach the ledge at ...

physics please help
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period? What is the power of the elevator motor during an upward cruise with ...

physics
Your vertical spring accelerometer has a 40 g mass hanging from it. You climb aboard the roller coaster that starts at rest and watch the accelerometer read 0.45 for 5 seconds while descending the first peak and then change to 2.8 for 2.5 seconds while going through the bottom...

physics
An ore car of mass 40000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 16 m lower vertically, is a horizontally situated spring with constant 2.7 × 105 N/m. The acceleration of gravity is 9.8 m/s2 . Ignore friction. How much is the ...

Physics.. please help!!!!!
A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The top of the fence is 4 m high. The ball hits ...

Algebra II
A rock is thrown upward with a velocity of 28 meters per second from the top of a 36 meter high cliff, and it misses the cliff on the way back down. When will the rock be 9 meters from the water below. Round to two decimal places.

Algebra II
A rock is thrown upward with a velocity of 28 meters per second from the top of a 36 meter high cliff, and it misses the cliff on the way back down. When will the rock be 9 meters from the water below. Round to two decimal places.

Physical
At t = 0 s time a stone is thrown from the top of a cliff above a lake. Another stone is thrown down from the same point , 1.6 s later , with a initial velocity of 32.0 m / s. The two stones hit the water in one instant. Determine the cliff height.

Physics
A block of mass m = 5.0 kg is pulled along a rough horizontal surface by a rope as sketched in the figure below. ( rope is at a 30 degree angle from the horizontal) The tension in the rope is 50 N, and the coefficient of kinetic friction between the block and the surface is &#...

PHYSICS 2
A 2.0 kg cylinder (radius = 0.08 m, length = 0.50 m) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.77 m high and 5.0 m long. (b) What is its rotational kinetic energy? ? J (c) What is its translational kinetic energy? ? J How do...

  1. Pages:
  2. <<Prev
  3. 59
  4. 60
  5. 61
  6. 62
  7. 63
  8. 64
  9. 65
  10. 66
  11. 67
  12. 68
  13. 69
  14. 70
  15. 71
  16. 72
  17. 73
  18. Next>>

Post a New Question