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A 36 kg girl and a 7.9 kg sled are on the frictionless ice of a frozen lake, 20 m apart but connected by a rope of negligible mass. The girl exerts a horizontal 4.7 N force on the rope. What are the acceleration magnitudes of
(a) the sled and
(b) the girl?
(c) How far from the girl's initial position do they meet?
what is the magnetic force per meter exerted by one bolt. After the first spring compresses a distance of 28.5 cm, the second spring acts with the first to increase the force as additional compression occurs as shown in the graph. The car comes to ..
A 218.3 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. What is the velocity (speed) of the satellite
Suppose that during the launch of a rocket from the surface of the earth, Determine the acceleration of the rocket
Sound enters the ear, travels through the auditory canal, and reaches the eardrum. What is the fundamental frequency of the canal
Find the gravitational attraction between two solid lead spheres of 1 kg mass each if the spheres are almost in contact
A pole vaulter is running with a 2.5 kg carbon pole that is 4.5 meters long, holding it level to the ground. Calculate the forces that must be exerted by each of the two hands
In a television, electrons shoot down the picture tube and strike fluorescent material on the screen, causing light to be emitted and producing the picture. assume that a certain set, the electrons are accelerated from rest 2.0 x 10^8 ms-1 in abou..
A large plastic block has a net charge of -1.0mC. How many more electrons than protons are in the block
A potter is shaping a bowl on a potter's wheel rotating at constant angular speed. The friction force between her hands and the clay is 1.5 N total. How large is her torque on the wheel
What is magnitude of the runner total displacement
You want to take a full-length photo of your friend who is 1.94m tall, using a 35.0mm camera having a 50.0mm lens, How far is the lens from the film
A ball thrown straight upward returns to its original level in 2.80 s . A second ball is thrown at an angle of 44.0 degrees above the horizontal. What is the initial speed of the second ball
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