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Q1. The total momentum of a closed system is observed to be 670 kg·m/s east. The system consists of 36 objects that are observed to be colliding with each other. After 13.3 min and 4732 collisions, what is the total momentum of system?
Q2. How long would it take you to cover the 83 length of the walkway if, once you get on the walkway, you at once turns around and start walking in the opposite direction with a speed of 1.7 relative to the walkway?
A 5.05-kg ball of clay is thrown downward from a height of 2.77 m with a speed of 4.61 m/s onto a spring with k = 1730 N/m. Find the total work done on the clay during the spring's compression
The height of a helicopter above the ground is given by h = 3.00 t3, where h is in meters and t is in seconds. After 2s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground.
The electric field at a point in space is E? =( 600i^+ 600 j^)N/C. What is the magnitude of the proton's acceleration
Four 8.5 kg spheres are located at the corners of a square of side 0.80 m. Calculate the magnitude and direction of the total gravitational force
An arrow is shot from the top of a castle wall. It hits the ground 543 m away from the base of the wall with a velocity of 79.0 m/s at an angle of 29.7 degrees below the horiztonal
A gymnast does a one-arm handstand. The humerus, which is the upper arm bone between the elbow and the shoulder joint, What is the compressional strain of the humerus
A car of mass 1286.6 kg is moving at a speed of 67.6 mph when it misses a curve in the road and hits a bridge piling, how much average power (in watts) is expended in this interval
A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. How long does it take the red ball to reach the ground
A train car with mass m1 = 527 kg is moving to the right with a speed of v1 = 8 m/s and collides with a second train car, What is the mass of the second train car
A Heliun-Neon laser illuminates a narrow, single slit that is 1850 nm wide. Determine the wavelength of the light from the laser
Two automobiles are equipped with the same single-frequency horn. When one is at rest and the other is moving toward the first at 20 m/s, What does the frequency the horns emit
A spherical metallic Christmas tree ornament has a diameter of 6.41 cm. If Saint Nicholas is by the fireplace, 1.37 m away, where will he see his reflection in the ornament
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