12,762 Answered Questions for the topic physics

Physics

01/16/23

Finding Final Speed
A 730-kg car stopped at an intersection is rear-ended by a 1720-kg truck moving with a speed of 15.5 m/s.Part A: If the car was in neutral and its brakes were off, so that the collision is... more
Follows • 2
Expert Answers •1
Physics

01/16/23

Finding Kinetic Energy Lost During A Collision
An air-track cart with mass m1= 0.35kg and initial speed v0= 0.95m/s collides with and sticks to a second cart that is at rest initially.If the mass of the second cart is m2=0.55kg, how much... more
Follows • 2
Expert Answers •1
Physics

01/16/23

Finding Skater's Mass Using Speed
Two ice skaters stand at rest in the center of an ice rink. When they push off against one another the 65 kg skater acquires a speed of 0.64 m/s. If the speed of the other skater is 0.85 m/s, what... more
Follows • 2
Expert Answers •1
Physics

01/16/23

Impulse On Ball
When spiking a volleyball, a player changes the velocity of the ball from 4.5 m/s to -24 m/s along a certain direction.If the impulse delivered to the ball by the player is -9.2 kg⋅m/s, what is the... more
Follows • 2
Expert Answers •1
Physics

01/16/23

A One-Dimensional Inelastic Collision
Block 1, of mass m1= 9.90 kg, moves along a frictionless air track with speed v1= 23.0 m/s. It collides with block 2, of mass m2= 37.0 kg, which was initially at rest. The blocks stick together... more
Follows • 1
Expert Answers •1
Physics

01/16/23

How do I find the mass of the second object if they both completely stop?
A 1,272 kg truck going 15.2 m/s collides head on with a car going 26.4 m/s. If they both completely stop from the collision, what must the mass of the car be?
Follows • 1
Expert Answers •1
Physics

01/16/23

Circular Motion Practice
A 75kg passenger is riding the cliffhanger barrel ride at the fair. If the barrel radius is 4m and the coefficient of friction between the rider and the wall is 0.5, what is normal force the rider... more
Follows • 1
Expert Answers •1
Physics

01/16/23

Circular Motion Practice
A 600kg roller coaster car is at the top of a loop (it is upside down) that has a radius of 6m. If the normal force on the roller coaster car is -12,000N, how fast is the car moving?
Follows • 1
Expert Answers •1
Physics

01/16/23

Circular Motion Practice
An 800kg roller coaster is at the top of a hill (the hill radius is 7m) moving with a speed of 4 m/s. What is the normal force on the roller coaster at this point?
Follows • 2
Expert Answers •1
Physics

01/16/23

Circular Motion Practice
A 1,100kg car is turning on a flat roadway, moving in a circle with a radius of 12m. The car is going maximum speed through the turn without skidding. If the coefficient of friction between the car... more
Follows • 2
Expert Answers •1
Physics

01/16/23

An alpha particle mass(4u) experience head on collision elastically with nucleus mass(197u) what is the percentage of its original kinetic eneegy
Follows • 1
Expert Answers •1
Physics

01/15/23

A 1.73e+03 kg car accelerates uniformly from rest to 15 m/s in 3.00s.
(a) What is the work done on the car in this time interval? (b) What is the power delivered by the engine in this time interval? 
Follows • 1
Expert Answers •1
Physics

01/15/23

Can something with higher Frequency than the frequency of light exist and if so can it surpass the light.
I'm just a student and i wonder if that is possible.Can we make something's frequency higher than the frquency of light?that way can we make an proton or kind of message travel to the future ?
Follows • 1
Expert Answers •1
Physics

01/11/23

A car is moving across a level highway with a speed of 31.3 m/s. The brakes are applied and the wheels become locked as the 1290-kg car skids to a stop. The braking distance is 130 meters.
What is the initial kinetic energy of the car? What is the final final energy of the car?  How much work was done by the brakes to stop the car?Determine the magnitude (enter your answer as a... more
Follows • 1
Expert Answers •1
Physics

01/11/23

A 2.1 kg ball is attached to a ceiling by a string. The distance from the ceiling to the center of the ball is 1.11 m, and the height of the room is 3.00 m.
(a) What is the gravitational potential energy associated with the ball relative to the ceiling? (b) What is the gravitational potential energy associated with the ball relative to the floor? (c)... more
Follows • 1
Expert Answers •1
Physics

01/11/23

What is the kinetic energy of an automobile with a mass of 1030 kg traveling at a speed of 8.8 m/s?
Follows • 1
Expert Answers •1
Physics

01/11/23

A spring with a rest length of 0.3 m has a spring constant of 80 N/m. It is stretched and now has a length of 1.8 m.

What is the potential energy stored in the spring?
Follows • 1
Expert Answers •1
Physics

01/11/23

In the documentary "Jurassic Park" a velociraptor in a small cage is lifted and placed in a larger container. The mass of the velociraptor and cage together is 290 kg.

What is the gravitational potential energy added when when the velociraptor and cage is lifted from the ground to a height of 5.6 m?
Follows • 2
Expert Answers •1
Physics

01/11/23

Calculate the kinetic energies of the following objects moving at the given speeds.
(a) a 120 kg football linebacker running at 9.00 m/s (b) a 4.40 gram ball at 580 m/s
Follows • 1
Expert Answers •1
Physics

01/11/23

A person lifts a 8.2 kg box of bricks a vertical distance of 1.30 m and then carries the box horizontally a distance of 11.00 m.
(a) How much work is done by the person in the process?(b) How much work is done by gravity in the process?
Follows • 2
Expert Answers •1
Physics

01/11/23

A 50 kg box is lifted by a person pulling a rope a distance of 20 meters straight up at a constant speed.
How much Power is required from the person in order to complete this task in 8 seconds?
Follows • 1
Expert Answers •1
Physics

01/11/23

1 Dimensional analysis- Time and position
You travel at 60 mile/hour for 3 minutes.Then,you speed up to 80 mile/hour, which took 200 meters. Finally, you come to a stop, which took 1 mile. How much time did this take? How far did you travel?
Follows • 1
Expert Answers •1
Physics

01/10/23

Warm-up physics
a 163 ib man walk up a 15m flight of stairs in 50m, how much work did the man do and what his power output?
Follows • 1
Expert Answers •1

01/10/23

Two friends are walking, having a normal conversation; the sound level of the conversation if 60 dB...Calculate the new sound level.
Two friends are walking, having a normal conversation; the sound level of the conversation if 60 dB. When they get near a busy street, they have to double the intensity of the sound to be able to... more
Follows • 1
Expert Answers •1
Physics

01/10/23

what is the force of gravity acting on ganymede?
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.