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A 2.00 kilogram cart is moving at a rate of 4.0 meters per second when a continual force of 16.0 newtons begins to act on the cart in the direction of motion. What is the speed of the cart after 7.0 seconds?
Starting from rest, a crate of mass is pushed up a frictionless slope of angle by a horizontal force of magnitude. What is the speed of the crate at the top of the slope
The function y(x, t) = (25.0 cm) cos(?x - 26?t), with x in meters and t in seconds, describes a wave on a taut string. What is the transverse speed for a point on the string at an instant
A rock is thrown from the edge of a cliff to the ground 24.0 m below. The rock has an initial velocity of 13.5 m/s, directed 24.0° above the horizontal. Find the velocity of the rock just before it strikes the ground
A homeowner is trying to move a stubborn rock from his yard which has a mass of 1.150 × 103 kg. what is the minimum total length of board required to move the rock
A 4 kg mass is connected to a spring (k = 730 N/m) platform which undergoes simple harmonic motion in the vertical direction. The amplitude of the oscillation is 5 cm. At t=0 the box is 5 cm above the equilibrium position.
A cell phone 6.7 cm tall is 43 cm in front of your eye (diameter 2.5 cm). Find the size of the image of the cell phone on your retina
If an electron's position can be measured to a precision of 2.2 x 10-8 meter, find how precisely can its speed be known
A long, narrow horizontal slit lies 1.00 µm above a plane mirror, which is in the horizontal plane. Find the distance from the mirror to the first maximum
A mass moves from rest down an inclined plane with an angle of 60 degrees at the top. find the acceleration of the mass down the ramp
Two spherical objects are separated by a distance of 1.27 × 10-3 m. How many electrons did it take to produce the charge on one of the objects
A machine gun fires 25-g bullets at the rate of 4 bullets per second. What is the average recoil force experienced by the machine gun
A Gas of diatomic molecules is in equilibrium at a temperature of 340K. what is the rms angular speed of the molocules
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