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A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. An extra mass m = 4.2 kg is placed on the sled. If the same force is just barely able to keep the sled moving, what is the coefficient of kinetic friction between the sled and the trail?
What average force athletes legs apply on a ground
Why must a thermom be calibrated? You have a glass bulb thermom with no markings on it, and a second one marked in degrees Celsius. Describe how you would calibrate the unmarked thermom.
How much work is done by an applied force that moves two charges of +5.0 µC that are initially very far apart to a distance of 4.6 cm apart?
A daredevil on the motorcycle leaves the end of a ramp with a speed of 36.0 m/s. If his speed is 34.20 m/s while he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. In meters
Find time constant if the ball's amplitude has decreased to 2.20 cm after 51.0 oscillations? Explain your answer.
Chuck Norris's razor blade has an output force of 2500 lbs is used to shear his burley face. The shaving blade has the 0.35 inch thick blade with a 55 degree slope.
An archer shoots an arrow horizontally at the target 14 m away. The arrow is aimed directly at the center of target, but it hits 59 cm lower.
The mass of mars is 6.419 times 10 26 square kg and the mass of a single proton is 1.673 times 10 negative 27 square kg. assuming mars is made entirely of protons, how various protons would make up mars.
Assume too that the bullets rebound straight back with no change in speed. What is the magnitude of the average force on Superman's chest from stream of bullets.
A car travelling at 25.0 {rm m/s} runs out of gas while travelling up a 22.0^circ slope. How far will the car go up the hill before it runs out of gas.
A string is 80.0 cm long and has a mass per unit length of 5.51 × 10-4 kg/m. The tension in the string is 200 N. In the fundamental mode, at what frequency does the string vibrate? Answer A) 376 Hz B) 450 Hz C) 598 Hz D) 702 Hz E) 964 Hz
A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 4.50 m/s in 0.852 s. What are the magnitudes of the linear impulse and the average total force experienced by a 65.0 kg passenger i..
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