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A.) The box of a well-known breakfast cereal states that one ounce of the cereal contains 107 Calories (1 food Calorie = 4186 J). If 2.03 % of this energy could be converted by a weight lifter's body into work done in lifting a barbell, what is the weight of the heaviest barbell that could be lifted a distance of 2.04 m?
B.) The latent heat of vaporization of H2O at body temperature (37.0°C) is 2.41E+6 J/kg. To cool the body of a 77.7 kg jogger [average specific heat capacity = 3460 J/(kg*°C)] by 1.50°C, how many kilograms of water in the form of sweat have to be evaporated?
A low speed wind tunnel has an inlet cross sectional area of 2m2 and a test cross sectional area of 0.5m2. What is the inlet velocity
A satellite revolves around a planet at an altitude equal to the radius of the planet. The force of gravitational interaction between the satellite and the planet is F_0. Then the satellite moves to a different orbit, so that its altitude is tripl..
A thin metallic spherical shell of radius 42.6 cm has a total charge of 6.95, What is the electric field at a distance of 14.4 cm from the center of the spherical shell
Objective questions based on kinematics.
A rocket of mass 3.95 × 105 kg is in flight near earth's surface. Its thrust is directed at an angle of 54.7° above the horizontal, compute the direction of the rocket's acceleration
A single loop of wire of radius 3 cm carries a current of 2.9 A. What is the magnitude of B on the axis of the loop at the following the center of the loop
Wonder Woman and Superman fly to an altitude of 1650 km, carrying betwen them a chest full of jewels that they intend to put into orbit around Earth. At what speed does the chest impact the surface of the water
A charge of -3.9 micro-coulombs is launched from the positive plate of a large capacitor to the negative plate.
A 1 041-kg satellite orbits the Earth at a constant altitude of 103-km. What is the change in the system's potential energy
A 10 nC point charge is at the center of a 2.0m x 2.0m x 2.0 mcube. What is the electric flux through the top surface of the cube
How much time does the object take to reach the ground.
Compute the momentum of the bullet
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