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One kilogram of dry air is warmed from 20ºC to 70ºC under a constant pressure of 1atm. Calculate
(a) the heat absorbed by the gas,
(b) the change in internal energy, and
(c) the work done.
The gearshift lever AB for the transmission of a sports car has position vector r whose line of action passes through points A and B. The driver applies the force F to the knob B of the lever to shift gears. Find out the magnitude of the component..
The incident electron loses energy The incident electron emits an x-ray.
A proton collides elastically with a stationary deuteron. If the proton is deflected by 37 degrees, what fraction of its kineti energy does it transfer to the deuteron.
A 150g ball and a 250g ball are connected by a 34cm long, massless, rigid rod. The balls rotate about their center of mass at 130 . what is the speed of ball of 150 g.
A uniform electric field of magnitude 380 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.60 cm. (a) What is the work done by the field on the electron? J (b) What is the change in..
A ferryboat transports tourists among three islands. It sails from the first island to the second island, 5.78 km away, Calculate the distance between the first and third islands
A river flows due east at 1.50 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 15 m/s due north relative to water.
You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball, How tall is the building that the child is standing on
Use the blackbody radiation law to estimate the wavelength of maximum intensity for the light from the sun's photoshere
A 14.40 kg block and a 25.3 -kg block are resting on a horizontal frictionless surface. Between the two is squeezed a spring (spring constant = 1108 N/m).
A dart is thrown horizontally toward the bull's-eye, point P on the (non-standard size) dart board in the figure, with an initial speed of 8.9 m/s. It hits at point Q on the rim, vertically below P 0.14 s later. What is the distance PQ? How far aw..
Determine the force (in N) of the car on truck all through the impact. Call this force positive if it points to the east, and negative if it points to the west.
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