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A 68.1-kg basketball player jumps vertically and leaves the floor with a velocity of 1.92 m/s upward. (Take upward as positive and forward as positive.)
(a) What impulse does the player experience? both mag and direction
(b) What force does the floor exert on the player before the jump? both mag and direction
c) What is the total average force exerted by the floor on the player if the player is in contact with the floor for 0.450 s during the jump? both mag and direction.
An astronaut on the Mars attaches a small brass ball to a 1.00- length of string and makes a simple pendulum. She times 13 complete swings in a time of 35.4 seconds. From this measurement she calculates the acceleration due to gravity on the Mars.
In 0.749 s, a 9.43-kg block is pulled through a distance of 4.84 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
Find the focal length of a glass lens that has an index of refraction equal to 1.66, a concave surface that has a radius of curvature of magnitude 108 cm
An 8.05-kg stone at the end of a steel (Young's modulus 2.0 x 1011 N/m2) wire is being whirled in a circle at a constant tangential speed of 19.7 m/s. Find the strain in the wire
A rectagular boat is overloaded so that the water level (in fresh wateer) is just one centimeter (1.0cm) below the top of the boat, what is combined mass of all the people and the boat combined
Light of wavelength 520 nm passes through a slit of width 0.230 mm. How far is the screen from the slit
Four identical particles of mass 0.608 kg each are placed at the vertices of a 4.08 m x 4.08 m square and held there by four massless rods, What is the rotational inertia of this rigid body
A vertical straight wire carrying and upward 24-A current exerts an attractive force per unit length of 8.8 X 10-4 N/m on a secon parallel wire 7.0 cm away
Physics: How much time is required to row cross the river? How wide is the river?, A river man can row his boat at a speed of 2.5 m/s through still water. He wants to row directly across a river that has a current flowing at 1.5m/s
An ac generator has a frequency of 6.5 kHz and a voltage of 35 V. When an inductor is connected between the terminals of this generator, What is the inductance of the inductor
A particle travels 16 times around a 18-cm radius circle in 37 seconds. What is the average SPEED (in m/s) of the particle
Suppose a hanging 1 kg lab mass is attached to a 4.0 kg block on the table. If the coefficient of kinectic friction, mu is 0.20, what is the acceleration of the block.
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