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Solve the following questions:
Question I: What is the drag force on a 1.6 m wide, 1.4 m high car traveling at 10 m/s (22 mph)? Suppose that the density of air is 1.2 kg/m3.
Question II: What is the drag force on a 1.6 m wide, 1.4 m high car traveling at 30 m/s (67 mph)? Suppose that the density of air is 1.2 kg/m3.
Explanation and formulas needed for best answer!
on a hot day a house is kept cool by an air conditioner. The outside temperature is 32 degrees celsius and the inside temperature is 21 degree celsius. what is the mechanical power that it requires to hold the inside temperature constant
Car headlights use concave mirrors. There's a concave mirror in the back of the headlight socket, and the actual light bulb is placed somewhere along the principal axis. :
A 50 Ω resistor is connected in series with a 15 μFcapacitor and a 60 Hz, 120 V source. What value inductor must be inserted in the circuit inorder to reduce the current to one-half that found in a
for a science fair competition a group of high school students build a kicker-machine that can launch a golf ball from
A beaker of water rests on an electronic balance that reads 999.0 g. A 2.4 cm-diameter solid copper ball attached to a string is submerged in the water, What is the new balance reading
A solid aluminium cube 20 cm on an edge floats face-down onmercury. How much higher on the cube's sides will the mercury level be
A kind of glass has an index of refraction of 1.640 for blue light of wavelength 430 nm, what is the angle between the two beams inside the glass
q1. a uniform plank of length 4.6 m and weight 204 n rests parallel on two supports with 1.1 m of the plank hanging
Two point charges are separated by 10.0 cm and have charges of +2.00 uC, What is the electric field at a point midway between the two charges
A 3.00-g bullet traveling horizontally at 413 m/s hits a 28.0-g wooden block, compute The speed of the block after the collision
A 202 kg cart runs into the rear end of a 103 kg cart that is stationary. what is the speed of the cart before collision
Determine what velocity would a proton need to circle Earth 1500 kilometer above the magnetic equator
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