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A body is traveling at 5.00 m/s along the positive direction of an x-axis. No net force acts on the body. An internal explosion separates the body into two parts, each of 6.00 kg, and increases the total kinetic energy by 19 J. The forward part continues to move in the original direction of motion.
What is the speed of the rear part?
What is the speed of the forward part?
What is the minimal mass of helium (density 0.18 kg/m^3) needed to lift a balloon carrying two people in a basket, if the total mass of people, basket
A large, cold (1.20 C) block of iron is immersed in a tub of hot (99.7C) water. Calculate the change in entropy of the system this time
A 10 cm long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 4.8 nC, is 4.2 cm from the center of the rod. What is the magnitude of the force of the bead.
A spring with k = 40.0 N/m is at the base of a frictionless 30.0° inclined plane. how far up the incline does it travel before coming to rest and then sliding back down
Megan's mass is 28kg. She climbs the 4.8m ladder of a slide and reaches a velocity of 3.2m/s at the bottom of the slide. How much work was done by friction on Megan? Assume that air resistance is negligible.
The velocity of an airplane with respect to the ground is 2.00 x 102 m/s at an angle of 30.0 degrees NORTH of EAST. find the velocity of the air with respect to the ground
The displacement vectors 38.5 cm at 15.0° and 23.0 cm at 62.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
An airplane flying directly eastward at a constant rate travels 305 km in 2.0 h. What is the average velocity of the plane
The edge of the thimble of a micrometer moves a distance of 2.0 mm when it is given four complete revolutions. Find the pitch of the micrometer. If the number of divisions on the circular scale is 50, calculate the least count of the micrometer. U..
A tiny 0.0250 -microgram oil drop containing 15 excess electrons is suspended between to horizontally closely-spaced metal plates, Which plate must be positive, the upper one or the lower one
Gold, which has a density of 19.3 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber.
A vertical spring with a spring constant of 480 N/m is mounted on the floor. From directly above the spring, that is unstrained, a 0.150 kg block is dropped from rest.
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