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A copper calorimeter can with mass 0.169 kilogram contains 0.201 kilogram of water and 2.90×10-2 kilogram of ice in thermal equilibrium at atmospheric pressure. The relevant latent heats and specific heats can be found in your book. If 0.832 kilogram of lead at a temperature of 383 is dropped into the can, estimate what is the final temperature of the system if no heat is lost to the surroundings?
a projectile is fired from a submarine traveling horizontally at 20 ms with respect to the water as shown in the figure
a piano turner hears one beat every 1.1 second when trying to adjust two strings, How far off in frequency is the other string
When a 65-kg person climbs into a 1000-kg car, the car'ssprings compress vertically by 2.8 cm. What will be the frequency of vibration when the car hits a bump
The end of the cutting cord on a gas-powered weed cutter is 0.15 m in length. If the motor rotates at the rate of 20 rev/s, what is the tangential speed of the end of the cord
A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 160 ms. (a) How far below the release point is the center of mass of the two stones at t = 300 ms? (Neither stone has yet reached t..
The orbital speed of Earth about the Sun is 2.90×104 m/s and its distance from the Sun is 1.50×1011 m. find the magnitude of the force exerted by the Sun on Earth
Telescopes can be networked together to give an apparent aperature equal to their separation. Telescopes on either side of Earth can be combined to give an aperature of 8000 miles, greatly improving resolving power. What is this technique called?
A 20.0-kg box rests on a horizontal surface. The coefficient of static and kinetic friction between the box and the surface are 0.30 and 0.10 respectively
A test tube 105 mm long is held rigidly at 29° with respect tothe vertical in a centrifuge with its top lip 6.0 cm from the central spin axis of the machine. If itrotates at 43000 revolutions per minute, what is the centripetal acceleration of a ce..
Calculate the position inthe x-y plane where the net electric field is zero due to these twocharges. Calculate the magnitudeand direction of the force on a + 2.0 µC charge placed atthis point.
What is the main optical element of a refracting telescope? A department store sells an "astronomical telescope" with anobjective lens of 30 cm focal length and an eyepiece lens of focallength 5 mm. What is the magnifying power of this telescope?
on a snowy day with the temperature near the freezing point the coefficient of static friction between a cars tires and
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