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A rubber ball is dropped and bounces vertically from a horizontal concrete floor. If the ball has a speed of 3.7 m/s just before striking the floor and a speed of 2.4 m/s just after bouncing, what is the average force of the floor on the ball? Assume the ball is in contact with the floor for 0.11 s and the mass of the ball is 0.17 kg.
What is the average of the velocity squared in pure oxygen (O2) at standard pressure (1 bar) and concentration 0.001 mol/L? Give answer in (m/sec)^2
The block on the left hass a mass of 0.40 kg and is initially moving to the right at 2.4 m/s toward a second block of mass 0.50 kg that is initially at rest. What is the velocity of the first block after the collision
An AC generator is to have a maximum output of 346 V. Each coil has an area of 0.149 m2 and a resistance of 16.6 %u03A9, Find the maximum current induced in the coil
A pet-store supply truck moves at 25m/s north along a highway. Inside, a dog moves at 1.85m/s at an angle of 35° east of north. What is the velocity of the dog relative to road.
An astronaut weighs 275 lbs with equipment here on the surface of the earth. If he goes to a planet where the acceleration of gravity is 12.5 ft/s/s, What will be his mass be there
Three long parallel wires are 3.8cm from one another. Determine the magnitude and direction of the magnetic field at the midpoint of the side of the triangle between wire M and wire N
Lightning strikes a point on earth, delivering 20.0 C of charge from cloud to earth across a potential difference of 1.00 108 V. How much energy is delivered to the ground
Larry is standing at the edge of a vertical cliff 210m about the sea. how far has the rock traveled horizontally when it hits the water
A 51.5 kg hoop rolls along a horizontal floor so that its center of mass has a speed of 0.110 m/s. How much work must be done to stop it
A stopping car comes to a skidding stop after 5 m. If the road exerts a force of 600 N opposite to the direction of the motion: how much work does the road do on the car
A ball of moist clay falls 17.7 m to the ground. It is in contact with the ground for 15.0 ms before stopping. What is the average acceleration of the ball
An RLC circuit is set up with a 350 mH inductor, a 6.8 mF capacitor and a 550 W resistor. What is the phase angle of the circuit
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