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A rock weighing 400 N sits on the edge of a 60 m cliff. After falling 15 m how much kinetic energy does the rock have? Please explain.
A small glass bead has been charged to +30.0nC. What is the charge on the ball bearing
a piece of rock reads 2.776 N on a scale when in air, but 1.893 N in a fluid of unknown specific gravity. what is the density of the fluid
A force of 1 N is the only horizontal force exerted on a block, and the horizontal acceleration of the block is measured. when the same horizontal force is the only force exerted on a second block, the horizontal acceleration is three times as..
When water freezes, it expands about 8.73%. What would be the pressure increase inside your automobile engine block if the water in it froze
a rock is tossed off the top of a cliff of height 34.8 m. Its initial speed is 29.1 m/s, and the launch angle is 29.8 degrees with respect to the horizontal
The Doppler effect using ultrasonic waves of frequency 2.25×10^6 Hz is used to monitor the heartbeat of a fetus. find the maximum velocity of the surface of the beating heart
A car traveling at 21 {rm m/s} runs out of gas while traveling up a 25^circ slope. How far up the hill would it coast before starting to roll back down.
You have a 250-? resistor and a 0.410-H inductor. Suppose you take the resistor and inductor and make a series circuit with a voltage source that has a voltage amplitude of 30.0V, What is the voltage amplitudes across the inductor
Find the force acting on the roof of a 7m x 7m airtight building due to the difference in air pressure created during a hurricane with 78 m/s winds. A large open tank contains liquid with a density of 1200 kg/m3 at a depth of 10 m. A 5 x 10-3 m2 p..
an aiplane accelerates from rest down a runway at 3.20 ms2 for 32.8 s until it finally lifts off the ground. determine
One gram-mole of an ideal gas initially occupies V1 = 5.0 L at P1 = 117 kPa, and then expands to V2 = 10.0 L at constant pressure. How much heat is absorbed (+) or liberated (-)
A puck mass m=0.4 kg is sliding on a frictionless surface at a speed v=2.50 m/s in the x direction and I hits another puck o mass m= .2 kg at rest at the origin. what are the final speeds of the particles
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