How does the number of atoms in a 26.5 gram gold ring compare to the number in a silver ring of the same mass?

Amoung the higest and lowest temperatures recorded are 136degrees F in the Libyan desert and -129Degrees F in the Antarctica. What are these in Celsius?

To make a secrue fit, rivets that are larger than the rivit hole are often used and the rivit is cooled, before it is placed in the hole. A steel rivit 1.871cm in diameter is to be placed in a hole 1.869cm in diameter at 20Degrees C. To what temperature must the rivit be colled if it is to fit the hole?

A storge tank contains 21.6kg of nitrogen (N2) at an absolute pressure of 3.65atm. What will the pressure be if the nitrogen is replaced by an equal mass of CO2?

Twelve molecules have the following speeds, given in units of km/s. 6,2,4,6,0,4,1,8,5,3,7,8. Calculate the rms speed?

To What tempature will 7700J of heat raise 3.0kg of water that in initially at 10.0degrees C?

An automobile cooling system holds 16L of water. How much heat does it absorbe if its tempature rises from 20 degrees C to 90 degrees C?

A 215g sample of a substance is heated to 330 degrees C and then plunged into a 105g aluminum calorimeter cup containg 165g of water and a 17g glass thermometer at 12.5 degrees C. The final temp. is 35.0 degrees C What is the specific heat of the substance? (assume no water boils away)

During exercise, a person may give off a 180kcal of heat in 30 min. by evaporation
of water from the skin. How much water is lost?

Calculate the rate of heat by conduction, assuming that there are strong gusty winds and the external temp is -5degrees C. Glass window 2.0m x 1.5 m in area and 3.2mm thick inner and outer surface are 15.0degreesC and 14.0 degrees C

One end of a 33cm long aluminum rod with a diameter of 2.0cm is kept at 460 degrees C. and the other is immersed in water at 22 degrees C. Calculate the heat conduction rate along the rod?

** Please see the attached file for the complete problem description with the diagram **
Please provide a stepwise solution.
A system consists of a circular disc (Md=6kg, Rd=2m), onto which is affixed a rectangular block (Mb=4kg, Lb=3m), as shown in the figure below. The system starts at rest. the moment of inertia for the r

For the circuit below find:
a) The reactance of the inductor L. (20 mH)
b) The impedance of the resistor (R1 = 15 Ω) and inductor in series
do not need to find the phase of the current in this circuit.
E=10VAC
60Hz

1;A cathode plate is heated up to 300±C. What is the de Broglie wavelength of electrons it emits?
2.Show that the laws of energy and momentum conservation forbid the complete absorption of a photon by a free proton.

a. What is the highest energy to which alpha particles can be accelerated in a dc accelerator with 3 MV maximum voltage?
b. Calculate the energy of a 1 MeV gamma-ray photon after Compton scattering through 90 degrees.
Please show me a stepwise solution for how to reach the final answer.

Part 1:
The first-order line of 577 nm light falling on a diffraction grating is observed at a 13.6° angle. How far apart are the slits?
Part 2:
At what angle will the third order be observed?

1. A 5.3 g bullet leaves the muzzle of a rifle with a speed of 336 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.92 m long barrel of the rifle?
2. A shopper in a supermarket pushes a loaded cart with a horizontal force of 12 N. The cart has a mass of 29 kg.
(a) How far will i

28. A wave packet describes a particle having momentum p. Starting with the relativistic relationship E^2 = p^2 c^2 + E0^2, show that the group velocity is Bc and the phase velocity is c/B (where B = v/c). How can the phase velocity physically be greater than c?
44. An electron microscope is designed to resolve objects as sma

The records of Midwestern University show that in one semester, 38% of the students failed mathematics, 27% of the students failed physics, and 9% of the students failed mathematics and physics. A student is selected at random.
a.) If a student failed physics, what is the probability that he or she failed mathematics?
b.)

A ball starting from rest rolls 13 cm down an incline on which its acceleration is 25 cm/s2, then onto a second incline 30 cm long on which its acceleration is 7 cm/s2. How much time does it spend on each incline?