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Q1. A 51-kg person on skis starts from rest down a hill sloped at 32° from the horizontal. The coefficient of friction between the skis and the snow is 0.12. After the skier had been moving for 5.0 s, the friction of the snow suddenly increased and made the net force on skier zero. What is the new coefficient of friction?
Q2. In outer space, far from other objects, block 1 of mass 30 kg is at position < 12, 8, 2 > m, and block 2 of mass 1350 kg is at position < 19, 8, 1 > m. What is the (vector) gravitational force acting on block 2 because of block 1? It helps to make a sketch of the situation.
Two point charges = 2.10 and = -6.40 are 0.100 apart. Point is midway between them; point is 0.080 from and 0.070 from. Take the electric potential to be zero at infinity.
What is an angular speed of the small cylinders, which is between two inner and outer cylinders
A microscope with an eyepiece lens of focal length 1.90 cm and an objective lens of focal length 1.15 cm is used to examine a section of the brain of a sacrificed rat. The distance between the lenses of the instrument is 24.0 cm and final image is vi..
What tension is necessary to tune string properly
The frequency of a tuning fork is 358 Hz. Find the length of the shortest organ pipe which will give 6 beats/s with the fork. The velocity of sound in air is 339.1 m/s.
The speakers produce the same single-frequency tone in either drawing and are in phase. The speed of sound is 343 m/s. Find the single smallest frequency that would produce both constructive interference in drawing 1 and destructive interference in d..
Illustration on Eratosthenes' process
What minimum horsepower must a motor have to be capable to drag a 290 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
The rocket fires for 10 mins , after that the asteroid is moving at 30 degrees to its original path at the speed of 18 km/h/ Find its average acceleration.
Find out ratio of the detector
What is relative velocity
Find out the tension in the rope
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