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A car goes from 40 m/s to 80 m/s in a distance of 200 meter. Determine what is its average acceleration?
An orchestra is tuning its instruments using a tone at a frequency of 440 Hz. A man comes zipping by on a very quiet, electric scooter at a speed of 28 m/s. What tone does the man hear as he approaches the orchestra
Determine an average acceleration in coordinates with x-axis
A heavy mass in free fall does not fall faster than a light mass. The extra weight is compensated for by extra resistance. A heavy mass on a frictionless plane does not slide down faster than a light mass. A heavy ring and a light ring both roll d..
A rock is tossed straight up with a velocity of 34.5 m/s. When it returns, it falls into a hole 17.1 meter deep. Find is the rock velocity as it hits the bottom of the hole
A 75 g piece of ice at an initially unknown temperature is placed into a glass of 350 g of water sitting at room temperature, What is the specific heat capacity of the unknown metal
Students in a physics lab are to determine the specific heat of copper experimentally. They place 0.150 kg of copper shot into boiling water, what is the specific heat of copper
A piece of wood is 0.600 m long, 0.250 m wide and 0.080 m thick. Its density is 600 kg/m3. What volume of iron (ρI = 7.8 x 103 kg/m3 ) should be fastened underneath it so the wood now floats in water (ρw = 1000 kg/m3 ) with its top even by the water ..
a person who weighs 641 n is riding a 94.0 n mountain bike. suppose the entire weight of the rider and bike is
A 1035 kg car carrying four 78 kg people travels over a rough "washboard" dirt road with corrugations 5.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude while its speed is 16 km/h. The car now ..
Consider an airplane of wing area 6.8 m^2 (both wings combined) flying through air of density 1.13 kg/m^3. What is the net upward lift force on the plane
a particle moves in the xy plane with constant acceleration. at time zero the particle is at x 7.0 m y 7.0 m and has
two parallel metal plates have area a 255 cm2 and are separated by l 0.50cm. they have a potential difference of 0.25
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