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If you performed 681 kJ of mechanical work and you had a metabolic efficiency of 0.21, determine how much metabolic work did you do?
The rms speed of a sample gas is increased by 2 %, What is the percent change in the temperature of the gas
A laser beam is incident on two slits with a separation of 0.210 mm, and a screen is placed 5.30 m from the slits. what is the wavelength of the laser light
A cart is attached to a hanging mass by a string that passes over a pulley. Write an equation for the work done by friction when the cart is moving up the track at constant speed
A coil of wire with a resistance of 0.45 ohm has a self-inductance of 0.083 H. If a 3.0-V battery is connect across the ends of the coil, what is the stored energy in the inductor
Two spherical point charges each carrying a charge of 40 mC is attached to the two ends of a spring of length 20 cm. If its spring constant is 120 Nm-1, what is the length of the spring when the charges are in equilibrium?
a bulb emits light uniformly in all directions. the average emitted power is 150w. at a distance of 5m from the bulb
A polarized light beam, with a 7.33-mm-diameter circular cross section, is perpendicularly incident on an ideal polarizer, What force in piconewtons does the light exert on the polarizer
Evaluate the critical angles for zircon and ice when surrounded by air. Suppose that λ = 589 nm
At the start of a trip, a driver adjusts the absolute pressurein her tires to be 2.83 x 105 Pa when the outdoor temperature is284 K. find the air temperature inside the tires at the end of the trip
An airplane pilot wishes to fly due west. A wind of 70.0 km/h is blowing toward the south. What is the speed of the plane over the ground
A rock of mass 49 kg accidentally breaks loose from the edge of a cliff and falls straight down. What is the magnitude of the acceleration of the rock
q1. a dielectric-filled parallel-plate capacitor has plate area 40.0cm2 plate separation 5.00mm and dielectric
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