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To determine the specific heat capacity of lead, you get 500g of lead shot to 100 degrees C and place it in an aluminum calorimeter of mass 250g, that contains 500g of water initially at 17.5 degrees C. If the final temperature of the mixture is 21.5 degrees C, what is the specific heat of lead? (take specific heat of water to be 4186 J/kg*K and specific heat of aluminum to be 900J/kg*K)
A 75 kg skydiver can be modeled as a rectangular box withdimensions of 20cm x 40 cm x 180 cm. What is the terminal speed if he falls feet first
A toy of mass 0.145kg is undergoing simple harmonic motion (SHM) on the end of a horizontal spring with force constant 300N/m . When the object is a distance 1.15×10-2m from its equilibrium position
a string stretched between two fixed ends vibrates in its second harmonic with a frequency f=2 Hz. if the velocity that links the frequency and wavelength is equal to 40 m/s, find the wavelength of the stationary wave
A 20.0 ?, 9.00 ?, and 9.00 ? resistor are connected in parallel to an emf source. A current of 6.00 A is in the 9.00 ? resistor. Calculate the equivalent resistance of the circuit
A researcher would like to perform an experiment in a zero magnetic field, which means that the field of the earth must be cancelled. What current is needed in the solenoid's wires
A cat runs along a straight line (the x-axis) from point A to point B to point C. The distance between points A and C is 5.00 m, distance between points B and C is 10.0 m, and the positive direction of x axis points to the right. The time to run f..
A 4 kg hammer is accelerated at 4m/s^2 before striking a nail for 1.6 sec find the force of the hammer
A 1 kg rubber ball is bounced off a hard floor just prior to its hitting the floor, the ball has a downward speed of 2 m/s. find Is the collision elastic or inelastic
An object has a kinetic energy of 303 J and the momentum of magnitude 22.9 kg·m/s. Find the speed and the mass of the object.
An airplane whose air speed is 628km/h is supposed to fly in a straight path 33.0? north of east. But a steady 88km/h wind is blowing from the north. In what direction should the plane head
How much force does a 150,000 N/C force exert on a deuteron.
A shotgun fires a large number of pellets upward, with some pellets traveling very nearly vertically and others as much as 1.0o from the vertical. suppose that the initial speed of the pellets is uniformly 150ms-1 and ignore air resistance.
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