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A 60.0-kg runner expends310W of power while running a marathon. Assuming that 11.0%of the energy is delivered to the muscle tissue and that the excess energy is removed from the body by sweating, determine the volume of bodily fluid (assume it is water) lost per hour.
A 20 gram bullet is fired horizontally into a 400 gram block of wood suspended like a ballistic pendulum. Find the velocity of the bullet just before the impact
A round flywheel is going 35 rad/s and the moment of inertia is25 kg-m2. It merges with an oval flywheel with inertiaof 15 kg-m2 and velocity of 12 rad/s in the opposite direction. What is the final angular velocity?
A vertical wall (6.4 mmultiplied by 2.9 m) in a house faces due east. A uniformelectric field has a magnitude of 150 N/C. This field is parallelto the ground and points 30° northof east. What is the electric flux through the wall?
A 2200 kg elevator is attached to a 1500 kg counterweight. What power must the motor supply to raise the elevator at 0.5 m/s
A radar system can measure the time delay between the transmitted and reflected wave pulses from a distant airplane with an accuracy of 1.02 picoseconds. What is the accuracy in the calculated distance to the plane
the far point of an eye is 190 cm. a corrective lens is to be used to allow this eye to focus clearly on objects a
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.8 m/s at ground level. What is its maximum altitude
A 50 g marble moving at 2.0m/s strikes a 20g marble at rest. What is the speed of each marble immediately after the collision
a Hollow sphere of mass M=1000kg and radius R=25cm is rolling down of an incline plans making an angle with horizontal. calculate the angular acceleration of hollow sphere
q1. in a head-on collision a car stops in 0.27 from a speed of 12. the driver has a mass of 76 and is fortunately
A narrow beam of light with wavelengths from 450 nm to 700 nm is incident perpendicular to one face of a 40.00 degreee prism made of crown glass
a metal sign for a car dealership is a thin uniform right triangle with base length b and height h. the sign has mass
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