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An internal explosion breaks an object, initially at rest, into two pieces, one of which has a 1.5 times the mass of the other. if 7500J were released in the explosion, how much kinetic energy did e
How many jouels of energy are necessary to heat the steam from 100.0 degrees celsius to 114.0 degrees celsuis if the specific heat of the steam is 2.1 J/g degrees celsius?
A rectangular container measuring 10cmx20cmx25cm is filled with gas. What is the mass volume of water in kilograms?
A worker pushes horizontally on a large crate with a force of 294 N, and the crate is moved 6.2 m. How much work was done?
A 3.0 kg block of wood sits on a table. A 3.0 g bullet, fired horizontally at a speed of 550 m/s, goes completely through the block, emerging at a speed of 190 m/s. What is the speed of the block i
What minimum volume is necessary for the lift off? assume that the balloon material and the load occupy negligible volumes.
A proton moves with a velocity of v = (2i 4j + k) m/s in a region in which the magnetic field is B = (i + 2j 3k) T. (i, j and k are unit vectors in the x, y and z directions). What is the magnitude
The sled is now pulled up the incline at constant speed by a child. The child weighs 431 N and pulls on the rope with a constant force of 100 N. The rope makes an angle of 30° with the incline a
What is the magnitude of the gravitational force (in Newtons) on a 19 kg sphere located at the origin due to the other spheres?
Determine the average speed for the trip and determine the distance between the initial and final cities along this route.
What is the velocity of the boat relative to shore? If the river is 240 m wide, how far downstream has the boat moved by the time it reaches the north shore?
A butter?y at eye level is 21 cm in front of a plane mirror. You are behind the butter?y, 65 cm from the mirror. What is the distance between your eye and the image of the butter?y in the mirror?
(a) With the automobile on level ground, determine the magnitude of the force from the ground on each front wheel (assuming equal forces on the front wheels)
An electric field of 120000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of -7.8C at this spot?
Drops a shell whn it is 12.5m above the ground. what is the mgnitude and direction of the shell's acceleration just afther it is realeased?
A 12 kg runaway grocery cart runs into a spring with spring constant 260 N/m and compresses it by 65 cm. What was the speed of the cart just before it hit the spring?
Describe your local and surrounding ecologies and environments. List the specific factors that distinguish your local ecology and environment.
A proton moves with a speed of 3.10 106 m/s horizontally, at a right angle to a magnetic field. What magnetic field strength is required to just balance the weight of the proton and keep it moving h
A fighter plane flying at constant speed 320 m/s and constant altitude 12000 m makes a turn of curvature radius 1900 m. On the ground, the plane's pilot weighs (83 kg) (9.8 m/s2) = 813.4 N. What is
How much heat must be added to .45 kg of aluminum to change it from a solid at 130 degrees celsius to a liquid at 660 degrees celsius? the latent heat of fusion for aluminum is 4.0 x 10^5 J/kg.
The masses of the three blocks are m1 = 15 kg, m2 = 27 kg, and m3 = 50 kg. The pulling force is equal to T3 = 18 N. What is the acceleration of the system?
A 0.10Kg bullet is fired into a stationary 5.0Kg block of wood. The bullet sticks in the wood and they both move back together with a velocity of 0.600m/s. What was the original speed of the bullet?
A spherical shell of mass 2.7 kg and radius 5.0 cm is given a charge of -7.0 mC and is held fixed in space. A second small spherical ball is brought to a spot 3 cm from the surface of the shell, rel
A bullet of mass 0.0022 kg moving at 501 m/s embeds itself in a large fixed piece of wood and travels 0.69 m before coming to rest. Assume that the deceleration of the bullet is constant. What forc
(a) Calculate the frequency of the damped oscillation. (b) By what percentage does the amplitude of the oscillation decrease in each cycle? (c) Find the time interval that ellapses while the energy