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Q. A person who weighs 620 N stands at x = 5m, right on the end of a long horizontal diving board that weighs 350 N. The diving board is held up by two supports, one at its left end at x = 0, and one at the point x = 2.00 m. (a) what is the force exerted on the support at x = 0? (b) What is the force acting on the other support? (Use positive to indicate an upward force, negative for a downward force.)
How much must this spring be stretched to store.
A truck covers 40.01 m in 7.615 s while smoothly slowing down to final speed 1.40 m/s. What is the original speed and what is the acceleration.
An airplane has a mass of 2.6 x10^6 kg, and the air flows past the lower surface of the wings at 95m/s. If the wings have a surface area of 1200m2, how fast should the air flow over the upper surface of the wing if the plane is to stay in the air?..
How much work is completed by the Moon's gravitational field as a 915kg meteor comes in from outer space and impacts on the Moon's surface.
How long does it take the crate to hit the ground. suppose that the plane continues to fly with the same velocity.
what is the minimum coefficient of static friction required between tires and race track if the car is to stay on the track at a speed of 130m/s.
How many kilograms of water at 100.0 C could be converted to steam by the addition of 1.13 x 10^7 joules of thermal energy.
find the velocity of their center of mass before the collision.
The two upper front teeth of a person exert a total force of 30N on a piece of steak. If the biting edge of each tooth measures 10 mm x 1 mm, find out the pressure on the steak.
To estimate the muzzle speed of a blow dart, fire dart straight up into the air and time how long it takes to come back down. Roughly half of that time is the time for object to decelerate from its initial velocity to motionless. Estimation the in..
An electric field of intensity 2.5 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.70 m long if the following conditions are true.
compute the linear speed due to the Earth's rotation for a person at a point on its surface located at 40o N latitude (this would be near the Ohio river valley, for instance). The radius of the Earth is 6.40 ξ 106 m. (For comparison, the speed of ..
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