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A bullet of mass m= 0.0230 kg is fired along an incline and imbeds itself quickly into a block of wood of mass M= 1.30 kg. The block and bullet then slide up the incline, assumed frictionless, and rise a height H= 1.20 m before stopping. Calculate the speed of the bullet just before it hits the wood. Note. The block is kept from sliding down the incline initially by as small peg.
Two charges of +0.250 C are placed at the points (1.25 mm, 0) and (-1.25 mm, 0). A third charge of -0.450 C is placed at the origin. a. What is the electric field at the point (0, 2.20 mm)? b. At what point on the y-axis will E be zero? Show graph..
The density of air at standard temperature and pressure (STP) is 1.20 kg/m^3 how much mass could this balloon carry
As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. how long must the engines be fired
The half-life of iodine-131, an isotope used in the treatment of thyroid disorders, is 8.04 days. what is the activity of the sample
The lengths of the three telescopes are LA = 456 mm, LB = 640 mm, and LC = 787 mm. The focal length of the eyepieces is 3.00 mm
A floodlight with a mass of 46.00 kg is used to clarify the parking lot in front of a library. The floodlight is supported at the end of horizontal beam that is hinged to a vertical pole. A cable that makes an angle of 29 degrees with the beam is att..
Two ropes support a load of 253 kg. The two ropes are perpendicular to each other, Find the tension in the second rope
A 14.2-g piece of Styrofoam carries a net charge of -0.69 µC and is suspended in equilibrium above the center of a large, find the charge per unit area on the plastic sheet
A coin is placed 8 cm in front of a concave morror. T he mirror produces a real imege that has the diameter 4 times larger than that of the coin. What is the image distance.
A molecule consists of two atoms. How far from the first atom is the center of mass of the molecule
Two compact sources of sound oscillate in phase with a frequency of 120 Hz where the speed of sound is 340 m/s. What is the amplitude of the resultant wave at that point
In a three-slit system, the first minimum occurs at an angular position of 6.00 degrees. Where is the first maximum
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