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Two boxes of masses, m and 2m, are in contact with each other on a frictionless surface. What is the acceleration of the more massive box?
The Black body radiation emitted from a furnace peaks at a wavelength of 4.1 x 10^-6 m (0.0000041m)
A 200 gram block, attached to the end of an ideal spring (horizontal) with force constant k = 70 N/m, What is the total mechanical energy of the block
In an X-ray tube electrons strike a tungsten target (W or "wolfram") after being accelerated through a potential difference V0. Estimate the minimum value of V0 required to observe the Kalpha peak.
If you lie on the ground at night with no cover, you get cold rather quickly. Much of this is due to energy loss by radiation. Estimate the net rate at which your body loses energy by radiation to the night sky under these conditions
a 7.4 cm-diameter-baseball has a mass 145 g and is spinning at 2000 rpm. Treating the baseball as a uniform solid sphere, whats its angular momentum
During a snowmobile race our hero goes 16.7 km at 45 deg to the North of West (45 degrees above the -X). Then turns and goes 7.5 km due east. Then turns and goes 23 km at 40 degrees to the West of South (40 degrees to the left of -y).
A cockroach with mass m runs counter clockwise around the rim of a lazy Susan (a circular dish mounted on a vertical axle) of radius R and rotational inertia I with frictionless bearings.
Calculate the specific heat of a metal from the following data. A container made of the metal has a mass of 3.3 kg and contains 15 kg of water. A 1.0 kg piece of the metal initially at a temperature of 170°C is dropped into the water
A rocket is launched at an angle of 59° above the horizontal with an initial speed of 97 m/s. The rocket moves for 3s along its initial line of motion with an acceleration of 28m/s2.
Four objects are situated along the x axis as follows: a 1.70kg object is at -0.9m, a 1.60kg object is at 0.2m, a 2.4-kg object is at the origin, and a 2.50kg object is at -1.10m.
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
A 2kg ball traveling to the right with a speed of 4 m/s collides with a 4 kg ball traveling to the left with a speed of 2 m/s. The total momentum of the two balls after the collision is what.
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