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Please show all work to solve the given parts of following question:
Question: A car changes in motion from 0mph to 60mph in 3.5 seconds. If it starts from a stop and travels a distance of a quarter mile,
A- What is the car's speed?
B- Does it travel at this speed all the time?
Show all work, use additional paper if necessary. Thanks.
An escalator is needed to carry 80 passengers per minute a vertical distance of 7.0 meter. Mass of each passenger is 65 kilogram. Determine the total amount of work
when the pressure on saturated liquid water is suddenly reduced to a lower pressure in an adiabatic and aergonic
An engine of an aircraft propeller delievers an amount of power 171 hp to the propeller at the rotational velocity of 2360 rev/min, How much torque does the aircraft engine provide
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Lets say you have a helicopter with 3 blades and eachblade is 5.20 m long and has a mass of 220 kg.The rotor is rotating at 325 rpm. What is the rotationalinertia of the rotor assembly about the axis of rotation?
A box that is 4.1m x 2.6m x 5m is filled with 915 balloons. Each balloon is filled with 0.00026808257310633 cm3 of helium. What is the mean free path of a balloon
Suppose that your friend jumps from the roof of a garage and lands on the floor. Find how will the impulses the floor exerts on your friend
Think an object that is in an elliptical orbit with semi major axis a = 7.4×106 m regarding a planet of mass M = 3.2×1023 kg. What is the speed of the object (a) When it is closest to the planet a tr = a/4? (b) When it is furthest from the planet?
The driver of one car sounds a 365 Hz frequency horn and the driver of the other car hears a frequency of 392 Hz, Determine the speed of both cars
A string of 13 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 63 W. What is the comparable resistance of light string.
The car accelerates uniformly to a speed of 2.05 m/s in 13.0 s and then continues at constant velocity.
a 1.2 m long bar of porcelain is placed in a laboratory furnace and heated to 1005 degrees c. if the final length of
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