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A uniform beam of length 10 m and mass 100 kg is supported by pylons on either end. A 200 kg box is centered at 5 m from the left end of the beam. What is the downward force on the left most pylon?
A civil engineer wishes to plan a curved exit ramp for a highway in a way that a car will not have to rely on friction to round the curve without skidding. In the other words, a car moving at the designated speed can negotiate the curve even while th..
A crow flies in two consecutive displacements to a point that is 80mto the west. Its first displacement is 80m in a direction θ =50 degrees west of north. What is the magnitude of its second displacement?
A bicyclist on a horizontal plane starts from rest and begins to pedal. The wheel of radius r = 0.345m has a constant angular acceleration of ? = 9.35rad/s2, What is the final angular velocity of the wheel
What is the significance of studying active versus normal galaxies? Explain. Do you think that our galaxy has ever been an active galaxy? Could it have hosted a quasar when it was young?
Two block each of 3.0 kg are held by strings. The upper string exerts a force F of 100 Newtons. find the force exerted by the lower string on the lower block
A skydiver, mass 80 kg, jumps out of an airplane traveling 150 km/h horizontally at an altitude of 1000 m. When she reaches the ground, her speed is 8.0 m/s. How much energy was dissipated with air resistance during the jump?
A diverging lens have a focal length of -10 cm. A 3-cm object is placed 25 cm to the right of the lens. What is the magnification of the image
A boat moves through the water of a river at 10-m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.6-m/s.
A solid block is attached to a spring scale. The reading on the scale when the block is completely immersed in water is 25.2 , What is the block's volume
Deathstroke (Green Arrows enemy) is 15m away from where Green Arrow fired the charged arrow. Does the charged arrow hit the villain, or does the electric potential stop it in time to allow Deathsroke to escape?
Consider a circuit. The three resistors are identical with R1 = R2 = R3= 160 ?, and the battery voltage is 50 V. What is the current through resistor R2?
the aurora is caused when electrons and protons moving in the earths magnetic field of 5x10-5 t collide with molecules
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