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a bathyshpere dives to a depth of 1000 m in the ocean. if the inside is maintained at one atmosphere, what is the net force acting on the round window of diameter 30 cm?
our little sister builds 2 tree houses and stretches a rope between them for sending messages to other tree house. She hangs a mass of 1.4kg on one end of the rope that passes over the pulley.
A projectile of mass 1.8 kg approaches a stationary target body at 4.8 m/s. What is the magnitude of the momentum of the target body after the collision
the cross sectional areas of the pistons in the system have a ratio of 25 to 1. If the maximum force that can be applied to the small piston is 12 N, what is the maximum weight that can be lifted?
A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, What is the mass m of the stone
Two boats start together and race across a 64-km-wide lake and back. Boat A goes across at 64 km/h and returns at 64 km/h. Boat B goes across at 32 km/h, and its crew, realizing how far behind it is getting, returns at 96 km/h. Turnaround times ar..
The sport with the fastest moving ball is jai alai, where measured speeds have reached 303km/h. If a professional jai alai player faces a ball at that speed and involuntarily blinks, he blacks out the scene for 100ms. How far does ball move throughou..
Consider a bar (L=3.00m) is sliding to the right on 2 rails with a velocity (0.75 m/s) towards a resistor (20 ohms), calculate the "Magnetic Braking force"
A 11 g bullet is fired horizontally into a 109 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 142 N/m. The bullet becomes embedded in the block.
A person's right eye can see objects clearly only if they are between 27cm and 86cm away. What will be the near point with the lens in place
An 6.70-cm-diameter, 300g sphere is released from rest at the top of a 1.60-m-long, 19.0 degree incline. What is the sphere's angular velocity at the bottom of the incline
The electric potential difference between two infinite, parallel metal plates is V. If the plates are separated by a distance L = 4.50 mm and the electric field between plates is E = 270 V/m, what is V.
A bumper car with mass m1 = 102 kg is moving to the right with a velocity of v1 = 4.9 m/s. A second bumper car with mass m2 = 90 kg is moving to the left with a velocity of v2 = -3.3 m/s, What is the velocity of the center of mass of the system
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