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Get college assignment help at uniessay writers A 17 g rifle bullet traveling 240 m/s buries itself in a 3.9 kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum’s displacement.

A ski starts from rest and slides down a 24{rm ^circ} incline 75 {rm m} long. If the coefficient of friction is 0.095, what is the ski’s speed at the base of the incline?

How long, in seconds, does it take an automobile traveling 65.0 km/h to become even with a car that is traveling in another lane at 40.0 km/h if the cars’ front bumpers are initially 114 m apart?

A rifle with a weight of 25 N fires a 3.5 g bullet with a speed of 210 m/s. If a 600 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle

1). Two people start at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of 1.50 10-3 rad/s, while the other has an angular speed of 3.90 10-3 rad/s. How long will it be before they meet? 2). On an open-reel tape deck, the tape is being pulled past the playback head at a constant linear speed of 0.372 m/s. (a) If the radius of the film taken up so far is 0.0576 m, find the angular speed of the take-up reel. (b) After 2.43 103 s, the take-up reel is almost full, as the lower part of the drawing indicates. The radius of film taken up so far is now 0.114 m. Find the average angular acceleration of the reel. Specify whether the acceleration indicates an increasing or decreasing angular velocity. 3).An electric drill starts from rest and rotates with a constant angular acceleration. After the drill has rotated through a certain angle, the magnitude of the centripetal acceleration of a point on the drill is twice the magnitude of the tangential acceleration. What is the angle? 4)A racing car, starting from rest, travels around a circular turn of radius 28.9 m. At a certain instant, the car is still accelerating, and its angular speed is 0.421 rad/s. At this time, the total acceleration (centripetal plus tangential) makes an angle of 35.0° with respect to the radius. (The situation is similar to that in the figure.) What is the magnitude of the total acceleration?

A baseball is thrown at an angle of 24◦ relative to the ground at a speed of 25.2 m/s. The ball is caught 48.1067 m from the thrower. The acceleration due to gravity is 9.81 m/s2 . How long is it in the air? Answer in units of s.

The second hand of a clock has a length of 0.30 m. What distance does the tip of the second hand sweep through in 3 minutes and 45 seconds?

A mechanic pushes a 2.40 103 kg car from rest to a speed of v, doing 5300 J of work in the process. During this time, the car moves 25.0 m. Neglecting friction between car and road, find each of the following.

A loudspeaker of mass 22.0 {rm kg} is suspended a distance of h = 2 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.90 {rm m}.

A flight attendant pulls her 70 N flight bag a distance of 247 m along a level airport floor at a constant velocity. The force she exerts is 41 N at an angle of 59° above the horizontal. (a) Find the work she does on the flight bag.

Get college assignment help at uniessay writers What is the tangential acceleration of a bug on the rim of a 10.0 in. diameter disk if the disk moves from rest to an angular speed of 75 revolutions per minute in 3.0 s?

In Example 10 the Steel Dragon starts with a speed of 3.0 m/s at the top of the drop and attains a speed of 42.9 m/s when it reaches the bottom. If the roller coaster were to then start up an identical hill, would its speed be 3.0 m/s at the top of this hill? Assume that friction is negligible.

An uncharged, 1.0uF capacitor is connected to a 55.0-V battery until it is fully charged, after which it is disconnected from the battery. A slab of paraffin is then inserted between the plates. K_paraffin = 2.2 a) What will now be the voltage between the plates? b) Find the change in energy stored in the capacitor?

Two spacecraft are 13,500 m apart and moving directly toward each other. The first spacecraft has velocity 525 m/s and accelerates at a constant −15.5 m/s2. They want to dock, which means they have to arrive at the same position at the same time with zero velocity. (a) What should the initial velocity of the second spacecraft be? (b) What should be its constant acceleration?

An object at rest explodes into three pieces. Two of them are equal in mass and break off at an angle of 85.2° to each other, both with a speed of 30.6 m/s. The last piece has 4 times as much mass as each of the other pieces. What is the magnitude of the velocity of the last piece?

A mechanic pushes a 2.8X10^3kg car from rest to a speed of v, doing 4600 J of work in the process. During this time, the car moves 20.0 m. Neglecting friction between car and road, find each of the following.(a) the speed v m/s (b) the horizontal force exerted on the car N

Boxes A and B in the figure have masses of 13.0 and 3.5 , respectively. The two boxes are released from rest. Boxes A and B in the figure have masses of 13.0 and 3.5 , respectively. The two boxes are released from rest. What would be the speed of the boxes when box B has fallen a distance of 0.50 m? The coefficient of kinetic friction between box A and the surface it slides on is 0.20. Use conservation of energy.

A worker drops a wrench from the top of a tower 97.0 m tall. What is the velocity when the wrench strikes the ground?

Lillian (mass 38.0 kg) standing on slippery ice catches her leaping dog (mass 15 kg) moving horizontally at 3.0 m/s. What is the speed of Lillian and her dog after the catch?

One way to measure g on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 {rm s} for a ball to fall freely 11.26 {rm m}, starting from rest.

Block A in the figure weighs 1.90 N and block B weighs 3.70 N. The coefficient of kinetic friction between all surfaces is 0.300. Find the magnitude of the horizontal force vec F_a necessary to drag block B to the left at a constant speed of 3.00 cm/s if A rests on B and moves with it. Find the magnitude of the horizontal force vec F_b necessary to drag block B to the left at a constant speed of 3.00 cm/s if A is held at rest by a string. In part (A), what is the friction force on block A?

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November 3, 2019