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A uniform board with a length of 1.2 m and mass 5 kg is placed on two scales as show below A weight W with mass 20kg is placed on the board 20 cm from it center. Each balance is located 10cm from the end of the beam. What are the readings (in Newtons or in kg) on the left and right balance?
Derive a formula for the maximum elevation of the jumper's center of gravity in terms of the crouch depth, c, the equivalent force to weight ratio, Fequiv/W, the platform speed, Vp and other relevant parameters.
A potter's wheel is rotating arounda vertical axis through its center at a frequency of 1.8 rev/s. What is the frequency of the wheel after the claysticks to it
The first controlled, sustained flight in a heavier-than-air craft was made by Orville Wright on December 17, 1903. The plane took off at the end of a rail that was 60 feet long, and landed 12 seconds later, 180 feet away from the beginning of the..
The space shuttle is in a 250 km high circular orbit. it needs to reach 610 km high circular orbit to catch the hubble space telesope for repairs. how much energy is required to boost it to the new orbit
A solid sphere is rolling without slipping along a horizontal surface with a speed of 4.50 m/s, What is the speed of the sphere after it has rolled 3.00m up the ramp
A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together. What is the speed of the wreckage just after the collision
A 250 gram ice cube at -10 C is placed in a Alum cup whose initial temp is 70 C. what is the mass of the cup
you construct a capacitor using a pyrex drinking glass. the glass is 10 cm tall with an inner radius of 3.4 cm and an
a 1900 kg car rounds a curve of radius 70 m banked at an angle of 12 deg. what is the magnitude of the friction force
you are driving toward a traffic signal when it turns yellow. your speed is the legal speed limit of v0 55kmh your
A horizontal desk surface measures 2.52 m x 2.05 m. If Earth's magnetic field has magnitude 0.463 mT, what is the magnetic flux through the desk surface
A 0.16 gram spider hangs from the middle of the first thread of its future web. The thread makes an angle of 7.2o with the horizontal on both sides of the spider. Estimate what is the tension in the thread
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