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Steve is jogging at a constant speed of 5.00 mph and encounters a hill that requires an average energy expenditure rate of 3.10 MJ/h. If the hill is 0.400 mi long, determine the mass of natural state foods that Steve must consume to replenish the energy spent climbing the hill, if he consumes
a. Only carbohydrate with an energy content of 4.20 MJ/kg.
b. Only protein with an energy content of 8.40 MJ/kg.
c. Only fat with an energy content of 33.1 MJ/kg.
a circular roller coaster has radius 30 m. The speed at the bottom is 37.0 m/s. What does it read in kilograms at the top of the ride
What length of tube closed at one end will produce the 5th harmonic with a frequency of 430 Hz? Assume the speed of sound is 345 m/s. What are the positions of the nodes and the antinodes?
Light from a laser strikes a diffraction grating that has 5 300 grooves per centimeter. The central and first-order principal maxima are separated by 0.488 m on a wall 1.76 m from the grating.
A violent rainstorm dumps 0.9 cm of rainon a city 3 km wide and 6 km long in a 2 h period. How many metric tons (1 ton= 103 kg) of water fell on the city?
As you zip through space in your PPS (personal propulsion suit), your pulse rate, as you count it, is 117 bpm, How fast are you moving with respect to the Moon
A rocket with a mass of 2.0x10^6 kg is designed to take off from the surface of the earth by burning fuel and ejecting it with an exhaust speed of 3500 m/s. What is the minimum rate at which the fuel should be consumed in order to attain liftoff?
Small telescopes are often advertised as "200 power" or "magnifies 200 times." As someone knowledgeable about astronomical telescopes, how would you progress such advertisements.
The initial speed of a 1.96-kg box traveling up a plane inclined 37° to the horizontal is 3.31 m/s. How far along the incline does the box travel before coming to a stop
Assume that the earth andthe moon have circular orbits (which is almost true) and that theperiods of their orbits are 365 {\rm days} and 28.0 {\rm days}, respectively. How much work does the earth do on the moon in one day
Two students are on a balcony a distance h above the street. One student throws a ball vertically downward at a speed v1; at the same time, the other student throws a ball vertically upward at the same speed.
a 10-m-by-14-m house is built on a 12-cm-thick slab of concrete. what is the rate of heat loss through the slab if the
A softball of mass 0.220kg that is moving with a speed of 8.5m/s collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
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