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35,000 joules of energy was needed to increase the temperature of a copper block by 35'c. The copper block has a mass of 2kg, calculate the value of the specific heat capacity. give the unit.
A plate carries a charge of -2.5µC, while a rod carries a charge of 1.9 µC. How many electrons must be transferred from the plate to the rod, so that both objects havethe same charge?
A magnetic field is perpendicular to a 0.0409 m x 0.0585 m rectangular coil of wire that has 115 turns, What is the magnitude of the change in the magnetic field
Illustrate what constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line side-by-side with Sally?
a shot putter launches a 7.41 kg shot by pushing it along a straight line of length 1.58 m and at an angle of 35.7deg
A ray of red light, for which n=1.54 and a ray of violet light, for which n=1.59, travel during a piece of glass. They meet right at the boundary among the glass and the air, and emerge into the air as one ray with an angle of refraction of 22.5?. Wh..
In an eclipsing spectroscopic binary system, the maximum radial velocities for the two components are 20 and 5 km/s. The orbit is circular, and the orbital period is 5 years. It takes .3 days from the start of the eclipse to the main minimum, whic..
A square coil 10 cm on a side has 1200 turns and carries a current of 25 A. Calculate the amount of work required to rotate it in a magnetic field of 1.2 T from φ = 0? to φ = 180?, where φ is the angle between the magnetic dipole moment and the ma..
Two point charges .03 m apart have an electric potential energy -90 microjoules . The total charge is 20 nanoCoulombs. What is the lesser charge
A converging lens and a diverging lens, separated by a distance of 30.0 cm, are used in combination. What is the focal length of the diverging lens
An insulating sphere of radius 0.170m has uniform charge density 7.30 × 109 C/m3. Find the work of electric field
Assume some dog tags create a sound with a frequency of 1118 Hz at rest. You place these dog tags on a greyhound dog. The dog runs towards you and moves with a speed of 13.7 m/s with her tags clanging together.
a 500 watt heater is used to heat water in a plastic bucket. assume that 90 of the heat produced by the heater goes
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