Tuesday
June 28, 2016

Homework Help: Science: Physics

Recent Homework Questions About Physics

physics
1. The position of a particle is given by x= At2 + Beαt, the particle is initially at x = -2.0m with v = 4.0 m/s at t = 0s. After 0.2 s, the velocity is observed to be 5 m/s. What is the acceleration after 1.0s?
Tuesday, February 16, 2016 by eduardo

Physics
A 1500 kg car accelerates from rest under the actions of two forces. One is a forward force of 1260 N provided by traction between the wheels and the road. The other is a 870 N resistive force due to various frictional forces. Use the work-energy theorem to determine how far ...
Tuesday, February 16, 2016 by Megan y

physics
A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. The bag, which has a mass of 15.0 kg, travels 4.50 m up the conveyor belt at a constant speed without slipping. If the conveyor belt is inclined at a 30.0° angle, calculate the work ...
Tuesday, February 16, 2016 by nick

Physics
A1500 kg car accelerates from rest under the actions of two forces. One is a forward force of 1260 N provided by traction between the wheels and the road. The other is a 870 N resistive force due to various frictional forces. Use the work-energy theorem to determine how far ...
Tuesday, February 16, 2016 by Megan y

physics
A 1180 kg car and 4720 kg truck undergo a perfectly inelastic collision. Before the collision, the car was traveling southward at 1.45 m/s , and the truck westward at 8.80 m/s. Find the velocity of the wreckage immediately after the collision. Enter the x and y components of ...
Tuesday, February 16, 2016 by lizbeth

physics
im new i need help with a question but scared to ask here the question may some1 explain but dont tell the answer How do the principles of convection, conduction, and radiation explain how the water in the saucepan gets hot?
Tuesday, February 16, 2016 by tank

Physics
What release height would be required for a 5 micrometer spherical spore to drift from africa to south america (distance =3200km)? assume spore density is 1.2. assume steady 6m/sec horizontal wind from africa to s.america.
Tuesday, February 16, 2016 by Anna

Physics
A 4.96 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=13.7N at an angle theta=16.0degrees above the horizontal. What is the magnitude of the acceleration of the block when the force is applied? I know a=F/m
Tuesday, February 16, 2016 by Emily

Physics
Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 8 kg, m2 = 33 kg, and m3 = 49 kg. The pulling force is equal to T3 = 89 N. What is the ...
Tuesday, February 16, 2016 by Emily

Physics
An elevator (cabin mass 600 kg) is designed for a maximum load of 2700 kg, and to reach a velocity of 3.4 m/s in 5 s. For this scenario, what is the tension the elevator rope has to withstand? I know I have to multiply the mass by the acceleration. I'm having a hard time ...
Tuesday, February 16, 2016 by Emily

physics
Which of the following ; if either, produces the larger change in kinetic energy; a force of 6 newtons acting through a distance of 3 meters or a force of 3 newtons acting through a distance of 6 meters.
Tuesday, February 16, 2016 by Mario

AP Physics 1
If electrical energy costs 12 cents, or $0.12, per kilowatt-hour, how much does it cost to operate an electric over for 5.0 h if it carries a current of 20.0 A at 220 V?
Tuesday, February 16, 2016 by Akanksha

physics
Calculate the amount of heat required to raise the temperature of 1kg of water from 30 degrees celsius to 60 degrees Celsius
Tuesday, February 16, 2016 by g

physics
What should be the magnitude of force F for the velocity of G to be constant?
Tuesday, February 16, 2016 by angy

physics
A(n) 0.251 kg soccer ball approaches a player horizontally with a speed of 15.8 m/s. The player illegally strikes the ball with her hand and causes it to move in the opposite direction with a speed of 27.3 m/s. What is the magnitude of the impulse delivered to the ball by the ...
Tuesday, February 16, 2016 by Madi

physics
A(n) 23000 kg freight car is rolling along a track at 2.8 m/s. Calculate the time needed for a force of 1960 N to stop the car. Answer in units of s.
Tuesday, February 16, 2016 by Madi

physics
Two students on roller skates stand face-toface, then push each other away. One student has a mass of 95 kg and the second student 60 kg. Find the ratio of the magnitude of the first student’s velocity to the magnitude of the second student’s velocity.
Tuesday, February 16, 2016 by Madi

Physics
A 500 g sample of gold heated to 971.0 deg. C is placed in a calorimeter containing 220 g of water initially at 20.0 deg. C. If no heat is lost to the surrounding environment what will the final temperature of the water be? [HINT: At the end, the sample will be in thermal ...
Tuesday, February 16, 2016 by Alyssa

PHYSICS
A box of mass m=20kg is to be pushed up the inclined plane by a horizontal force F at constant speed. of μk= 0.2, find the work done on the box by the force F?
Tuesday, February 16, 2016 by Francis Valois

PHYSICS help plz
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, horizontal distance 20.0 km, and 25.0° south of west. The second aircraft is at altitude 1050 m, horizontal distance 17.0 km, and 17.0° west of south. (a) Write the ...
Tuesday, February 16, 2016 by SFSU PHYSICS

please help physics
parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates and the charge density on the plate
Monday, February 15, 2016 by selina

physics
Mayan kings and many school sports teams are named for the puma, cougar, or mountain lion Felis concolor, the best jumper among animals. It can jump to a height of 12.2 ft when leaving the ground at an angle of 44.2°. With what speed, in SI units, does it leave the ground ...
Monday, February 15, 2016 by bobby

Science
I'm really bad at Biology and Science in general. Chemistry and Physics will be difficult for me because I'm not good at the Science branch even though I study and work hard for Science/Biology. What can I do to improve?
Monday, February 15, 2016 by Anonymous

Physics
A cylinderical brass rod with a radius of 2.10 cm and length of 1.50 m is placed in a fire with temperature of 490 deg. C. If the other end of the rod is at a temperature of 33 deg. C, what is the rate of heat transfer through the rod (ignore any heat loss from the sides of ...
Monday, February 15, 2016 by Alyssa

physics
parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates and the charge density on the plate
Monday, February 15, 2016 by selina

physics
What is the mass which causes a spring of k = 100 N/m to stretch by 10 cm?
Monday, February 15, 2016 by Robert

Physics
A styrofoam cooler is a cube with side length of 20.0 cm and walls with thickness of 1.9 cm. If the external temperature is 27.0 deg. C and the cooler contains ice and water at 0 deg. C. How much heat is transferred into the box in 24 hours? - I got 2.95x10^5 J for this and it...
Monday, February 15, 2016 by Alyssa

Physics
For each of the following functions describing the net force on a particle, determine any and all positions of equilibrium and characterize each as stable or unstable. (a) F = 4x − 2x3, (b) F = x2 + x − 6, (c) F = 5x − 9. Answer: a. x = 0, unstable; x = &...
Monday, February 15, 2016 by Ashley

Physics
At the gym, a woman lifts 40 kilograms of weights on the leg press machine. It takes her 0.5 seconds to raise the weights a vertical distance of 0.4 meters. How much power does the woman generate when lifting the weights?
Monday, February 15, 2016 by Tina

physics
a parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates and the charge density on the plate b)what ...
Monday, February 15, 2016 by ruth

Physics
Research stations in Siberia, Antarctica, and other remote locations use human power. People at the stations turn pedals, similar to bicycle pedals, that are connected to electrical generators. A researcher wants to investigate the power output of a person at a research ...
Monday, February 15, 2016 by tyler

Physics
Car 1 is parked when it is hit by Car 2. The momentum of Car 2 before the collision was 50 kg m/s. The momentum of Car 1 after the collision is 10 kg m/s. What is the momentum of Car 2 AFTER the collision?
Monday, February 15, 2016 by Bethany

Mechanics, Physics
Two Tugboats pull a disabled supertanker. Each tugboat exerts a constant force 1.8x10^6 N, one at 10° west of North and other at 10° east of north, as they pull the tanker 0.50km towards north. The mass of the tanker is 2.20x10^8 kg. What is the total work the tugboats...
Monday, February 15, 2016 by Majid

physics
(a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.561 m. What is the charge on each?
Sunday, February 14, 2016 by Tim

Physics
In the figure, the two blocks are attached by a massless rope over a frictionless pulley, and block M1 slides on the table without friction. The masses of the blocks are: M1 = 8.10kg and M2 = 3.90kg. Calculate the tension in the rope. ( g = 9.80 m/s2)
Sunday, February 14, 2016 by Heather

Physics
A shot-putter throws the shot ( mass = 7.3 kg) with an initial speed of 14.0 m/s at a 36.0 ∘ angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.20 m above the ground.
Sunday, February 14, 2016 by MB

physics
Two knights on horseback start from rest 88.0 m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of .300 m/s^2, while Sir Alfred's has a magnitude of .200 m/s^2. Relative to sir Ggeorge's starting point, where do the...
Sunday, February 14, 2016 by Anonymous

Physics
A toboggan approaches a snowy hill moving at 11.1 m/s . The coefficients of static and kinetic friction between the snow and the toboggan are 0.410 and 0.280, respectively, and the hill slopes upward at 42.0 ∘ above the horizontal. A)Find the acceleration of the toboggan...
Sunday, February 14, 2016 by Samantha

Physics
A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water at an initial temperature of 20C. After a short time, the temperature of both the metal and water become equal at 25C. The specific heat of water is ...
Sunday, February 14, 2016 by Anonymous

Physics
A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water at an initial temperature of 20C. After a short time, the temperature of both the metal and water become equal at 25C. The specific heat of water is ...
Sunday, February 14, 2016 by Jon

physics
two people kick a ball. one of them kicks it with a force of 215.0 newtons. the other one with 189.0 newtons. their approach creates a 210.0 degree angle at the point of impact and causes the ball to go in a different direction. what is the resultant of the vector from this ...
Sunday, February 14, 2016 by momo

Physics
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 845-kg electric car be able to supply to do the following? (a) accelerate from rest to 25.0 m/s in 1.00 min (b) climb a 200-m high hill in 2.00 min at a ...
Sunday, February 14, 2016 by Laura

Physics
A tug is capable of building a ship with a force of 100 KN.if two such tugs are pulling on one ship,they can produce any force ranging from a minimum of 0 KN to a maximum of 200 KN.give a detailed explanation of how this is possible. Use diagram to support your result?
Sunday, February 14, 2016 by Chipu

Physics
a body is dropped from rest at a heigth of 80m above the ground. (1)what is the speed just before it hits the ground?.(2)how long does it take to reach the ground?.
Saturday, February 13, 2016 by Adewale

Physics
A car is behind a truck going 18 m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 0.6 m/s2 and that he has to cover the 20-m length of the truck, plus 10-m extra space at the rear of the truck and 10 m more at ...
Saturday, February 13, 2016 by Azel

physics
To be dimensionally consistent, pressure [M/LT2], density [M/L3], and velocity [L/T] must be related as follows. Select one: a. pressure = density ´ velocity2 b. pressure = density2 ´ velocity c. pressure = density ´ velocity d. pressure2 = density ´ ...
Saturday, February 13, 2016 by Anonymous

Physics
determine the point of zero gravitation force, as measured from the centre of earth (mass 5.97 x 10^24 kg) to the sun ( mass 1.99 x 10^30 kg) if the earth-sun distance is 150 x 10^6 km.
Saturday, February 13, 2016 by S

Physics
a 1.2 kg magnet is capable of holding up a 0.5 kg mass. the magnet is placed on a vertical refrigerator door and given an initial push so that it slides up the door with an initial velocity of 0.11 m/s. if the coefficient of kinetic friction between the magnet and the door is ...
Saturday, February 13, 2016 by S

Physics
a 35 kg child slides down a 26 degree incline. the coefficient of kinetic friction is 0.33. what is her speed after sliding for 2.5 seconds starting from rest?
Saturday, February 13, 2016 by S

physics
A stone of mass 0.7kg is projected vertically upward with a speed of 5m/s.calculate the maximum height reached. [Take g=10m/s^2 and neglect air resistance]. "
Saturday, February 13, 2016 by samuel

physics
Temperatures are often measured with electrical resistance thermometers. Suppose that the resistance of such a resistance thermometer is 177Ω when its temperature is 28.7 °C. The wire is then immersed in a liquid, and the resistance drops to 116Ω. The temperature...
Saturday, February 13, 2016 by ted

Physics
Do the following calculations for a 1150 kg car. a. How much work must be done on the car to accelerate it from 0 to 60 km/h. **** Hi I am looking for advice on my questions below. This is my attempt at answering them.. Am i at least on the right track? Ek=1/2mv^2 =1/2(1150)(...
Saturday, February 13, 2016 by Bryan

Physics
Sara dragged a 45N canoe for 36 seconds down the boardwalk. If Sara used 120 Watts of power, how long was the boardwalk?
Saturday, February 13, 2016 by Susan

physics
Consider the line passing through the center of the cue ball as the x axis. At the point of collision with the solid ball on the table, a line passing through the centers of the cue ball and the solid ball form a 45° angle with the X axis. Assume no external forces acting ...
Saturday, February 13, 2016 by Janice

physics
A proton is placed in uniform electric field"E" what must be the magnitude and direction of electric field when electrostatic force is balanced by weight
Saturday, February 13, 2016 by Anonymous

physics
A bob of a pendulum 100cm long swings through 20cm,find theta in radian and degree
Saturday, February 13, 2016 by wilson

Physics
A pole vaulter has 3500J of energy when he crosses a bar 7 metres high. How much kinetic energy will he have before he reaches the ground?
Saturday, February 13, 2016 by Kyawt

Physics
A bullet of mass 3.9 g was fired at a stationary ball of lead. The head on impact moved the 10 kg ball at a velocity of .3703 m/s. If energy losses due to heat and internal energy are ignored. What was the speed of the bullet? a)370 b)950 c)549 d)975
Saturday, February 13, 2016 by Joe

physics
who develops more power,an 80kg man who walks up a height of 20 steps each 17.5cm high in 7second or one who pushes an 80kg box up a frictionless slope to a height of 5m in 10seconds? Give a reason for your answer
Saturday, February 13, 2016 by mukuba

physics
A force makes an angle of 60° with y-axis.Find x-component of force.
Saturday, February 13, 2016 by Hassan

physics
A capacitor,consisting two metal plates each of area 50cm2 and spaced 0.2mm apart in air ,is connected across a 120V supply.Calculate (1)the energy stored (2)the ekectric flux density and the potential gradient..
Saturday, February 13, 2016 by Anonymous

physics
A capacitor,consisting of two metal plates each of area 50cm2 and space 0.2mm apart in air ,is connected across a 120V supply.Calculate (1)the energy stored..(2)the electric flux density and the potential gradient..
Saturday, February 13, 2016 by jonathan

physics
A box rests on a frozen pond, which serves as a frictionless horizontal surface. If a fisherman applies a horizontal force with magnitude 37.5 N to the box and produces an acceleration of magnitude 2.80 m/s2, what is the mass of the box?
Saturday, February 13, 2016 by Corrin

physics
When point charges q1 = +8.9 μC and q2 = +7.6 μC are brought near each other, each experiences a repulsive force of magnitude 0.10 N. Determine the distance between the charges. I got 6.08 m
Saturday, February 13, 2016 by Naomi

physics
At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 291 N/C. At a distance r2 from the charge, the field has a magnitude of 165 N/C. Find the ratio r2/r1. I divided 165/291 and got .567
Saturday, February 13, 2016 by Naomi

Physics
Two spherical objects are separated by a distance of 2.97 × 10-3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each ...
Saturday, February 13, 2016 by Naomi

Physics
A bullet of mass 3.9 g was fired at a stationary ball of lead. The head on impact moved the 10 kg ball at a velocity of .3703 m/s. If energy losses due to heat and internal energy are ignored. What was the speed of the bullet?
Friday, February 12, 2016 by Joe

physics
there are 1000 bricks and when they are stacked neatly they measure 2m by 1m by 1m. What is the volume of the stack? what is the volume of one brick? what is the mass of one brick?
Friday, February 12, 2016 by brenda

Physics
A 2 kg steel ball strikes a wall with a speed of 13.9 m/s at an angle of 54.5 ◦ with the normal to the wall. It bounces off with the same speed and angle, as shown. If the ball is in contact with the wall for 0.277 s, what is the magnitude of the average force exerted on...
Friday, February 12, 2016 by Aly

Physics
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, horizontal distance 20.0 km, and 25.0° south of west. The second aircraft is at altitude 1050 m, horizontal distance 17.0 km, and 17.0° west of south. (a) Write the ...
Friday, February 12, 2016 by Anonymous

Physics
A ferryboat transports tourists among three islands. It sails from the first island to the second island, 4.38 km away, in a direction 37.0° north of east. It then sails from the second island to the third island in a direction 76.5° west of north. Finally, it returns ...
Friday, February 12, 2016 by Anonymous

Physics
Two identical charges repel each other with a force of 10-5 N when they are 20 cm apart. a.) What is the force on each when they are 5 cm apart? b.) When they are 100 cm apart?
Friday, February 12, 2016 by Mel

physics
A 35 micro coulomb point charge is placed 32 cm from an identical 35 micro coulomb charge. How much work would be required to move a 0.50 micro coulomb test charge from a point midway between them to a point 12 cm closer to either of the charges? i got an answer of -2.954 J ...
Thursday, February 11, 2016 by lauren

Physics
A 35 micro coulomb point charge is placed 32 cm from an identical 35 micro coulomb charge. How much work would be required to move a 0.5 micro coullomb test charge from a point midway between them to a point 12 cm closer to either of the charges?
Thursday, February 11, 2016 by Maddy

Physics
A bowling ball of mass 3.1 kg moves in a straight line at 2.31 m/s. How fast must a Ping-Pong ball of mass 2.552 g move in a straight line so that the two balls have the same momentum? Answer in units of m/s.
Thursday, February 11, 2016 by Kitty

physics
a tennis ball was thrown vertically upwards with an initial velocity of 20m/s calculate its velocity after 4seconds, it maximum height attained and time taken to reach it
Thursday, February 11, 2016 by Anonymous

Physics
A 600W flashlamp fitted to a camera is operated by discharging a 10 000 uF capacitor through the lamp. The capacitor is charged initially from a 6V battery. Calculate A) the energy stores in the capacitor when fully charged B) the duration of the flash
Thursday, February 11, 2016 by Josh

Physics
You are in the supermarket, pushing a cart with a force of 92 Newtons in the horizontal direction. There is a constant force of kinetic friction operating on the cart of 16.8 Newtons. Calculate the net work done on the cart, if the cart is displaced 5.6 metres in a straight line.
Thursday, February 11, 2016 by Jack

Physics
A pulley system has a velocity ratio of 4 and an efficiency of 80%.calculate the value of the effort required to raise the load of 480N
Thursday, February 11, 2016 by Sharon

physics
Vector V⃗ 1 is 6.5 units long and points along the negative x axis. Vector V⃗ 2 is 8.3 units long and points at 60 ∘ to the positive x axis.
Thursday, February 11, 2016 by daniella

physics
a motorcycle moves at an initial velocity of 40km/h and accelerates at a constant rate of 8.3 m/s^2 for a distance of 120m how fast is the motorcycle then moving?
Thursday, February 11, 2016 by Gavin

physics
How many hour will it take for a Bus to travel 1000 km. If it travels at an average velocity of 80 km/hr. assume constant acceleration.
Thursday, February 11, 2016 by arjeme

physics
steam at 100 degree C is passed into a container of negligible heat capacity containing 20 g of ice and 100 g of water at 0 degree C, until the ice is completely melted. Determine the total mass of water in the container. ( specific latent heat=2•3×10^3, specific ...
Thursday, February 11, 2016 by Anita Iwu

Physics
When a 300N force is applied to a box weighing 600N the box moves 3.0 horizontal in 20seconds
Thursday, February 11, 2016 by Patricia

Science (Physics)
A ball is projected horizontally from the top a hill with a velocity f 30mls. If it reaches the ground 5seconds later, the height of the hill is?
Thursday, February 11, 2016 by Ben

Science (Physics)
A ball is projected horizontally from the top a hill with a velocity of 30mls. If it reaches the ground 5seconds later, the height of the hill is?
Thursday, February 11, 2016 by Ben

physics
If 238U92 emits successively four alpha particles two beta particles, what will be the atomic number and mass number of the final product.
Thursday, February 11, 2016 by paresh

physics
The velocity of light in a transparent liquid is 1.8X10cm/second, while in vacuum it is 3X10^3cm/second. Find how much the bottom of the vessel containing this liquid appears to be raised if the depth of the liquid is 25cm.
Thursday, February 11, 2016 by paresh

physics
2 kg of water is contained in a 2.5 KW electric kittle. Assuring that the heat capacity of the kettle is negligible. Calculate (i) the time taken for the temp of water to rise from 25 degree centigrade to it boiling point 100 degree centigrade. (ii) the mass of the water ...
Thursday, February 11, 2016 by paresh

physics
What would be the final temperature of the mixture when .5 g of ice at -10 degree are mixed with 250g of water at 30 degree centigrade? S.H.C of ice 0.5cal/g degree centigrade and S.L.H of ice = 80cal/g.
Thursday, February 11, 2016 by paresh

physics
7. 50g of steam at 100 degree centigrade is passed into a mixture of 100g of ice and 200gm of water at 0 degree centigrade. Find the rise in temperature. (S.L. H. Of steam = 540 cal/g and Lf of ice = 80cal/g)
Thursday, February 11, 2016 by paresh

Physics
How much steam at 100 degree centigrade will just melt 3200g of rice at -10 degree centigrade ? ( S.H.C of rice = 0.5 cal/g digree centigrade; Let heat of vapour of steam =540cal/gg).
Thursday, February 11, 2016 by paresh

Physics
An aluminium cessel of mass 200g, contains 0.5 litre of water. What is the heat required to raise the temperature of the system from 25 Degree centigrade to 75 Degree centigrade? (S.H.C of Aluminium 0.84X10^3J/kg dehree centigrade and S.H.C of water 4.2X10^3J/kg dehree ...
Thursday, February 11, 2016 by paresh

Physics
A bulb is joined to a battery of e.m.f 6V. A steady current of 0.5 A flows through circuit. Calculate the total energy provided by the battery in 5 minutes.
Thursday, February 11, 2016 by paresh

Physics
A house wife uses “a fire tong pair” of length 20cm to lift a piece of burning coal of mass 200gm. If she applies force at a distance of 5cm from the fulcrum, what is her effort? If the efficiency of the fire tong is 100% . find it M.A and V. R.
Thursday, February 11, 2016 by paresh

physics
If the wavelength of Deepika’s voice is 2 and that of Ashwaria is 5m respectively in air. Find the frequency of Ashwaria’s voice. Fi the frequency of Deepika’s voice is 750Hz. Which of them has a higher pitch?
Thursday, February 11, 2016 by paresh

physics
1. A man throws a body of mass 500gm with a velocity of 10m/s vertically upward on a planet he weight of the body on the planet.
Thursday, February 11, 2016 by paresh

Physics
Suppose the height of the ramp is h1= 0.3 m, and the foot of the ramp is horizontal, and is h2= 1.00 m above the floor. What will be the horizontal distance traveled by the following four objects before they hit the floor? Assume that R= 12.7 mm in each case; assume that the ...
Thursday, February 11, 2016 by Anonymous

physics
A car approaching a bend in a road has its speed decreased from 30m/s to 10m/s.while traversing. A distance of 30m Calculate. 1- What's de retardation 2- How long did it take to traverse this distance
Thursday, February 11, 2016 by okeke

Physics
The displacement of a block of mass 439g 439 g attached to a spring whose spring constant is 66N/m 66 N m is given by x=Asin(ωt) x A s i n ω t where A=12cm A 12 c m . In the first complete cycle find the values of x x and t t at which the kinetic energy is equal to ...
Wednesday, February 10, 2016 by Sarah

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Homework Help: Science