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A stone is thrown vertically downward at an initial speed of 14m/s from a height of 65 meter above the ground.
a) Find how far does the stone travel in 2.0 sec?
b) Determine its velocity just before it hits the ground?
After having collected samples along the shore all day long, a marine biologist walks back to her campsite, 1.69 km away. What distance did the dog run
For distance objects, the angular size in degrees can be appropriate as 57deg (w/d), What is the angular size of the headlights on a car 15km away if the headlight are 1.2 m apart
A sound source radiates sounds uniformly in all directions. the intensity of the sound at a distance of 100 m is 1.00 x 10^-4 W/m^2. What is the power of the sound source
A 4.22 box sits at rest at the bottom of a ramp that is 7.74 long and that is inclined at 40.0 above the horizontal. The coefficient of kinetic friction is 0.40, and the coefficient of static friction is 0.50.
a wire carrying 12 a makes a 26 angle with a uniform magnetic field. the magnetic force per unit length of wire is 0.28
stainless-steel poles were arranged by an artist for the purpose of producing an enhanced display of lightning in a
A worker on top of a radar tower 22.4 ft high drops a wrench off the tower. What is the speed of the wrench when it hits the ground
The sound a string guitar can be varied by changing the tension in each string. what are the wave's natural frequencies
In the figure, a slab of mass m1 = 19kg rests on a frictionless floor, and a block of massm2 = 12 kg rests on top of theslab. Between block and slab, the coefficient of static friction is 0.30, and the coefficient of kinetic friction is 0.20.
A baseball catcher puts on an exhibition by catching a 0.150-kg ball dropped from a helicopter at a height of 100m above the catcher. what average force is exerted on the mitt by the ball
A spherical balloon has a radius of 7.5 m, and is filled withhelium. How large a cargo can it lift, assuming that the skin andstructure of the balloon have a mass of 800 kg
The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. What is the pilot's apparent weight at the lowest point if his true weight is 160 lb
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