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A commuting student leaves home and drives to school at an average speed of 38.0 km/h. After 25.0 min he realizes that he has forgotten his homework and returns home to obtain it at the same average speed. It takes 10.0 min to find the report, after which the trip to school 38.0 km away to the east is resumed at the same speed as before.
Describe what is the average velocity?
In order to calculate the number of ways of arranging a given amount of energy in a tiny block of copper, How many atoms are in the copper block
You're driving along a rural highway in a light rain at 62 mph (28 m/s). Just after rounding a bend, you see a 30-mph (13 m/s) speed zone ahead, with a police car parked just beyond the sign.
consider a completely isolated thick conducting infinite slab. one face-off the slab has a uniform surface charge
A conducting spherical shell of inner radius b and outer radius c is concentric with a small metal sphere of radius a
A 72.4-kg skier coasts up a snow-covered hill that makes an angle of 23.2 ° with the horizontal. The initial speed of the skier is 8.14 m/s. What is the magnitude of the kinetic frictional force
A 1000-turn loop (radius = 0.032 m) of wire is connected to a (20 ohm) resistor, What is the direction of the induced current
A star in a distant galaxy is located at a distance of 20 kpc from the center of that galaxy. What is the total mass of the dark matter in this galaxy
Two blocks of ice, one four times as heavy as the other, are at rest on a frozen lake. A person pushes each block the same distance . Ignore friction and assume that an equal force is exerted on each block.Which of the following statements is true ab..
Two gravitational forces act on a particle, in perpendicular directions. To find the net force, can we add the magnitudes of those two forces?
For charging process, the voltage across the capacitor as a function of time is given by Vc = ε[1-exp(-t/τ)]. When the time is twice the time constant, find what percentage of the maximum voltage is on the capacitor
The blades in a blender rotate at a rate of6600 rpm. What is the angular acceleration as the blades slow down
The hole on a level, elevated golf green is a horizontal distance of 125 m from the tee and at an elevation of released 10.4 m above the tee, What was the initial speed of the ball
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