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If a 33 kg child is 1.5 m from the pivot point (or fulcrum), how far from the pivot point will her 29 kg playmate have to sit on the other side for the seesaw to be in equilibrium?
Explain why the VOLTS/DIV knob of an oscilloscope doesn't have to be calibrated and the TIME/DIV button must be calibrated when measuring time-constants
the drawing shows a skateboarder moving at 5.4 ms along a horizontal section of a track that is slanted upward by 48deg
The launching speed of a certain projectile is 5.4 times the speed it has at its maximum height. Calculate the elevation angle at launching
A container holds 2.3 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 7.2x10-3 kg bullet with a speed of 960 m/s. What is the Kelvin temperature of the gas
A gun is fired vertically into a 1.9 kg block of wood at rest directly above it. If the bullet has a mass of 21.00 g and a speed of 195 m/s, how high would the block rise into the air after the bullet becomes embedded in it.
A sperical mirror is polished on both sides. When the convex side is used as a mirror, the magnification is +1/8. What is the magnification when the concave side is used as a mirror, the object remaining the same distance from the mirror?
You are watching an object that is moving in SHM. How much farther from this point will the object move before it stops momentarily and then starts to move back to the left
Two charges are placed on the x axis. One charge (q1 = +12.5 µC) is at x1 = +3.0 cm and the other (q2 = -13 µC) is at x2 = +9.0 cm. Find the net electric field (magnitude and direction) at the following locations. (a) x = 0 cm magnitude N/C direc..
Each of three tuning forks, A, B, and C, has a slightly different frequency. What is the smallest possible beat frequency when B and C are sounded together
A football player with a mass of 89 kg and a speed of 2.1 m/s collides head-on with a player from the opposing team whose mass is 120 kg. Find the speed of the second player
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. Find the size and the nature of the image
A lead sinker of mass 225 grams and density of 11.3 g/cm3 is attached to the bottom of a wooden block of mass 25 grams and density 0.5 g/cm3
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