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A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.42×105 kg, its speed is 26.4m/s, and the net braking force is 4.30×105N.
1. What is its speed 7.56s later?
2. How far has it traveled in this time?
A gunman standing on a sloping ground fires up the slope. The initial speed of the bullet is v0= 390 m/s. Find the maximum rangeof the bullet along the slope
A cat spots a flowerpot that sails first up and then down past an open window. How high above the windowtop does the pot go
A blimp is motoring at constant altitude. The airspeed indicator on the blimp shows that its speed relative to the air is 20km/h, what is the velocity (magnitude and direction) of the blimp relative to the ground
A playground merry-go-round has a radius of 4.20m and a moment of inertia of 255kg m2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child
What is the resistance of a 1.7m -long copper wire that is 0.50mm in diameter? (Answer should be in ohms)
a cart with a mass of 200 kg along a frictionless track. Calculate the velocity of the cart at points A and C is the cart is dropped from a height of 100m with an initial velocity of 10 m/s
light of wavelength 550 nm of air is found to travel at 1.96 x 10^8 m/s in a certain liquid. what is the frequency of the light in air
A popular brand of cola contains 6.50 g of carbon monoxidedissolved in 1.00 L of soft drink. what volume does the gas occupy
Gasoline contains predominately octane (the "octane" value quoted on the pump is approximately equal to the percent of octane in the gasoline).
A cart slides down a frictionless inclined track to a circular loop of radius R = 6 m. How high h above the top of the loop must the cart be released
The flywheel of a steam engine runs with a constant angular speed of 150 rev/min. When steam is shut off, the friction of the bearings stops the wheel in 2.7 h. (a) What is the constant angular acceleration, in revolutions per minute-squared, of t..
A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch, What maximum power must the motor provide
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