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A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 12.9 m/s. How high does the ball rise
A 68 kg student balances a 1400 elephant kg on a hydraulic lift. When a second student joins the first, What is the second student's mass
A glass is slid across a table top, goes off the edge and falls to the floor below. With what velocity did the glass leave the table top
A 3.50-kg steel ball strikes a wall with a speed of 13.0 m/s at an angle of ? = 60.0° with the surface. what is the average force exerted by the wall on the ball
How do I calculate final velocity of a planet moving around a star? The things I know are the positions of star/planet initial V of the planet, Final velocity of the planet after the force of the sun
A rectangular plate has a length of (20.4 0.2) cm and a width of (8.7 0.1) cm. Calculate the area of the plate
A large boulder rests on a cliff 500 m above a small village in such a position that, What is the initial speed of the boulder
A pion traveling at speed v decays into a muon and neutrino. at what angle does the muon come off
A projectile is launched with a launch angle of 65° with respect to the horizontal direction and with initial speed 14 m/s. what launch angle produces the longest time of flight
An object at distance (s) from a concave mirror of focal length (f) produces a real image at distance(s*) from the mirror. Will the new image be real or virtual
The electric potential at a position located a distance of 22.2 mm from a positive point charge of 8.40×10-9C, Calculate the value of the second charge
The earth has a vertical electric field at the surface, pointing down, that averages 120 N/C. What is the excess charge on the surface of the earth
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41 at 20°C. what is the temperature coefficient of resistivity
You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. how far away can you stand to hit the orange
You are lowering two boxes, one on top of the other, down the ramp by pulling on a rope parallel to the surface of the ramp. find the magnitude of the friction force on the upper box
A sprinter explodes out of the starting block with an acceleration of +3.9 m/s2, What is her velocity at the end of the race
A whale swims due east for a distance of 5.1 km, turns around and goes due west for 6.1 km, What is the total distance traveled by the whale
A 80.5 kg firefighter slides down a pole while a constant frictional force of 300 N retards her motion. Find the firefighter's speed just before she collides with the platform
A radar station locates a sinking ship at range 18.1 km and bearing 136° clockwise from north. How far apart are the plane and ship
You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.1. How far behind the pinhole should you place the viewing screen
A system absorbs at a 45% efficiency in a location where average solar-energy hitting the solar pan- els is 210 W/m2. what volume of water can be heated in one hour
A large boulder rests on a cliff 500 m above a small village in such a position that, if it should slide off, What is the final impact velocity of the boulder
Suppose a car battery provides 14 Volts when not in use. When the starter cranks, it draws 100 Amps, Find the Thevenins equivalent circuit for this battery
A 60 kg woman in an elevator is accelerating upward at 1.2 m/s^2. what is the normal force pushing upward on her feet