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A 0.49 kg block attached to a spring with force constant 150 N/m is free to move on a frictionless, horizontal surface as in the figure below. The block is released from rest after the spring is stretched 0.13 m.
(a) At that instant, find the force on the block.
N
(b) At that instant, find its acceleration.
m/s2
Force F = (-1.0 N) + (1.0 N) acts on a particle with position vector r = (5.0 m) + (5.0 m). What is the torque on the particle about the origin
A landing airplane makes contact with the runway with a speed of 78.0 m/s and moves toward the south. After 18.5 seconds, the airplane comes to rest. What is the average acceleration of the airplane during the landing?
A tortoise can run with a speed of 11.7 cm/s, and a hare can run 18.1 times as fast. How long does the race take
1.) A 0.50kg bullfrog is sitting at rest on a level log. How large is the normal force of the log on the bullfrog. 2.) A second 0.50kg bullfrog is on a log tilted 38 above horizontal. How large is the normal force of the log on this bullfrog
A circular loop carrying a current of 1.0A is oriented in a magnetic field of 0.35 T. What is the torque on the loop when its plane is oriented at a 25 degree angle to the field
An object sits on a wheel 0.30 m from its axle. The wheel's rotational speed decreases from 4.0 rad/s to 2.0 rad/s in 5.0 s. determine the wheel's average rotational acceleration
A right triangle has a hypotenuse of length 2.90 m, and one of its angles is 38.0°. What are the lengths of the following sides. a: the side opposite the 38.0° angle b: the side adjacent to the 38.0° angle
A sound wave with intensity 4 mW/m2 interferes destructively with a sound wave that has an intensity of 13 mW/m2
q1. a kid fires water horizontally from a squirt gun held 1.6 above the ground. it hits other kid 2.4 away squares in
The speed of a bobsled is increasing because it has an acceleration of 2.4 m/s2. find the magnitude of the net force that acts on the bobsled
Blood can carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. determine the temperature of the blood
You throw a 5-kg ball from a platform (releasing the ball at a height of 5 m) with a speed, 10 m/s, at an angle of 30° with respect to the horizontal. Find the total speed of the ball when it hits the ground
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