374 Answered Questions for the topic physics B

Physics B Math Science Physics

01/08/20

Force/Momentum problems
A 0.145 kg baseball is pitched at 35.0 m/s is hit on a horizontal line drive straight back at the pitcher at 50 m/s. If the contact tiem between the bat and ball is 0.02 seconds, thena) what is the... more
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Physics B Math Science Physics

01/08/20

Momentum Problems
1) How great of an impulse is needed to change the speed of an 8 kg cart from 32 m/s to 50 m/s? How many seconds would you need to apply a 10 N force in order to cause this impulse? 2) On a serve,... more
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Physics B Math Science Physics

01/08/20

Free body diagram question
How would a free body diagram look like during the push-off of ones vertical jump (that is, the jump is vertical). Would it simply be a box with Fg pointing downwards or a box with both Fg and Fn... more
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Physics B Math Science Physics

12/15/19

Physics Force Problem (Please help!)
A boulder weighing 2.0x10^4 N is resting on a hillside with a slope of 37 degreesa) what force tends to cause the boulder to slide down the hill?b) If there is no friction on the surface, what is... more
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Physics B Physics

12/14/19

Is it Possible to find the Linear Velocity?
The given information is:~Weight = 495N~Diameter of the Cylinder =10M~Average Acceleration = 21.6M/s2The cylinder is rotating, making the student stick to the wall. Is it possible to find the... more
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Physics B Physics

12/14/19

How do I find the force that the wall is exerting on a student when a cylinder is rotating?
The given information is:~Weight = 495N~Diameter of the Cylinder =10M~Average Acceleration = 21.6M/s2The cylinder is rotating, making the student stick to the wall. How do I find the force that is... more
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Physics B Physics

12/14/19

Select two answers
An amusement park ride called "The Giant Swings" consists of seats suspended by chains from a platform. After the passengers are secured in their seats, the platform rotates and the passengers... more
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Physics B Physics

12/14/19

What is the speed of Satellite B?
Two satellites are in circular orbits around Earth. Satellite A has speed vA. Satellite B has an orbital radius nine times that of satellite A. What is the speed of Satellite B?A. vA.9B. vA/3C.... more
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12/09/19

Physics, forces-spring problem
A block that weighs 12N is hanging from a spring scale that you are holding. How could you move the apparatus to produce a scale reading of less than 12NA) move the object downward and stop... more
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12/09/19

Physics, work problem
A mover is pushing a 20-kg box up a 30-degree ramp from the ground into a moving truck.The ramp is 2.1m long. He pushes it without rollers where the coefficient of kinetic friction is 0.3.a) what... more
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12/08/19

Physics, work problem
A mover is pushing a 20-kg box up a 30-degree ramp from the ground into a moving truck. He pushes with a constant velocity up the 2.1m ramp. He pushes it without rollers where the coefficient of... more
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12/08/19

Physics, Energy Problems (confused!)
1) a 2000 kg rollercoaster starts from a height of 55 m and an initrial velocity of 8 m/s. When it reaches the bottom of the hill (height of zero), what is its velocity?2) For the rollercoaster... more
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Physics B Math Science Physics

12/04/19

Physics, energy problems
1) a 2000 kg rollercoaster starts from a height of 55 m and an initrial velocity of 8 m/s. When it reaches the bottom of the hill (height of zero), what is its velocity?2) For the rollercoaster... more
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Physics B Physics Physics C

11/23/19

dielectric of capacitors
a dielectric with the dielectric constant k=4 is inserted into a parallel plate capacitor, filling 1/3 of the volume. if the capacitance of the capacitor without the dielectric is c whats is the... more
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Physics B Math Science Physics

11/11/19

Fnet=ma Problems
1) a 500 kg car is travelling at 15 m/s and experiences a forward engine force of 2000N for 3 seconds. The combined frictional forces acting on the car are 600 N. What is the car's acceleration?2)... more
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Physics B Math Science Physics

11/10/19

Fnet=Fma problems
1) a 500 kg car is travelling at 15 m/s and experiences a forward engine force of 2000N for 3 seconds. The combined frictional forces acting on the car are 600 N. What is the car's acceleration?2)... more
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10/25/19

Projectile Motion
(Ignore air resistance) A man is riding in the back of a truck (facing forward) that is driving forward at a constant velocity of 30 mph. If he throws a ball straight upward so that it reachers a... more
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10/24/19

Projectile Motion

1) A rifle is shot horizontally at a speed of 200m/s above flat ground. Compared to a bullet that is dropped at the same instant, the bullet that is shot will:a) take a longer time to reach the... more
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10/24/19

Pertaining to projectile motion, will an object thrown at a specific initial angle possess the same time in the air, range, and max height, as a different object that possesses the same initial angle?
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10/24/19

A cannon is situated 14m high above the ground and shoots a projectile at 20m/s. What is the location of the projectile?
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Physics B Math Physics Physics C

10/20/19

a 9.50kg hanging object.. PHYSICS HELP

A 9.50-kg hanging object is connected by a light, inextensible cord over a light, frictionless pulley to a 5.00-kg block that is sliding on a flat table. Taking the coefficient of kinetic friction... more
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Physics B Math Physics Sat Math

10/07/19

PHYSICS - A foreign automobile manufacturer claims that its sports car will accelerate from rest to a speed

A foreign automobile manufacturer claims that its sports car will accelerate from rest to a speed of 45.5 m/s in 7.35 s.(a)Determine the magnitude of the average acceleration of the car (in... more
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Physics B Math Math Physics

10/07/19

PHYSICS HELP - A ball is thrown upward from the ground with
A ball is thrown upward from the ground with an initial speed of 23.6 m/s; at the same instant, another ball is dropped from a building 18 m high. After how long will the balls be at the same... more
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Physics B Math Physics Sat Math

10/07/19

PHYSICS HELP - A particle moves along the x axis..
A particle moves along the x axis according to the equation x = 2.08 + 3.01t − 1.00t2, where x is in meters and t is in seconds.(a) Find the position of the particle at t = 3.40 s.(b) Find its... more
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Physics B

10/06/19

a sample of 2.50kg of water is held at a temperature of 100 celsius. how much energy must be added to completely turn the liquid water to water vapor
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