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A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 13.0 s. Ignore air resistance. The engine has a 22% efficiency, which means that 22% of the thermal energy released by the burning gasoline is converted into mechanical energy.
(a) What is the average mechanical power output of the engine?
(b) What volume of gasoline is consumed? Assume that the burning of 1.0 L of gasoline releases 46 MJ of thermal energy.
A person sees a heavy stone strike the concrete pavement. A, moment later two sounds are heard from the impact: How far away did the impact occur
A small glass bead charged to 6.9nC is in the plane that bisects a thin, uniformly charged, 10-cm-long glass rod, What is the total charge on the rod
Seismic p-waves travel at abou 6 km/s and s-waves at 4 km/s. how far away was the earthquake that produced them
Betty Bodycheck (mB = 54.7 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 42.4 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Find both Betty's and Sally's Kinetic Energies
A uniform drawbridge must be held at a 36.5 degree angle above the horizontal to allow ships to pass underneath. Find the magnitude of the force the hinge exerts on the bridge
When a diver jumps into the ocean, water leaks into the gap region between the diver's skin and her wetsuit, estimate how much energy (in units of candy bars = 300 kcal) is required by this heating process
Heart Pump Rate When at rest, your heart pumps blood at the rate of 5.00 liters per minute (L/min). find the volume of blood pumped by your heart in one day
A candle is placed 16.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 7.5 cm farther away from the mirror. Find out the focal length of the convex mirror.
An 85-g arrow is red from a bow whose string exerts a constant force of 105 N on the arrow over a distance of 75 cm. Illustrate what is the speed of the arrow as it leaves the bow?
An astronaut travels at a speed of 0.93c from the Earth to a distant star that is 4.5e+17 m away. how old is she when she arrives at the star
The temperatre result in each measurement are listed below, write down the formula for mean and calculate the temperature mean value
Calculate the specific gravity of a liquid given the following information: m = 51.50 ± 0.05 grams, mA = 32.00 ± 0.05 grams,mL = 42.50 ± 0.05 grams
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