accleration and tension using radius mass of two block & angle
A block of mass m1 = 3.50 kg and a block of mass m2 = 6.00 kg are connected by a massless string over a pulley in the shape of a disk having radius R = 0.25 m, mass M = 10.0 kg. In addition, they are allowed to move on a fixed block-wedge of angle = 30.0° as in Figure P10.61. The coefficient of kinetic friction is 0.360 for bo ...continues
numerical problems regarding work and energy, linear momentum, and rotational motion
problem1:A neutron in a nuclear reactor makes an elastic head-on collision with a carbon atom initially at rest. (the mass of the carbon atom is 12 times that of the neutron.) what fraction of the neutron's kinetic energy is transferred to tha carbon atom? (express your answer in percent) problem2:A 1400kg rocket sled at rest ...continues
A block of mass m = 0.65 kg is fastened to a spring with k = 65 N/m. The block is pulled a distance x = 11 cm from its equilibrium position at x = 0 on a frictionless surface and released from rest at t = 0. v= 1.1 m/s^2 Calculate the potential and kinetic energy of the oscillator when the block is at x = 0. ...continues
35.0 g of copper pellets are removed from a 300 degree C oven and immediately dropped into 90.0 mL of water at 17.0 degree C in an insulated cup. What will the new water temperature be?
Thermodynamics: Work done, heat transfer and internal energy
(See attached file for full problem description) 0.110 moles of a mono atomic gas follows the process shown in the figure Part A How much heat energy is transferred to or from the gas during process 1 to 2? Part B How much heat energy is transferred to or from the gas during process 2 to 3? Part C What is the tota ...continues
(a) As an egg develops into a chicken, its contents become more ordered. Does this violate the law of increasing entropy? Why? (b) In the operation of a refrigerator, does thermal energy flow from hot to cold, or is it from cold to hot? Why?
Mechanical Energy: Block Projected up the incline by spring
A block with mass m = 2.00 kg is placed against a spring on a frictionless incline with angle = 30.0° (Figure 8-43). (The block is not attached to the spring.) The spring, with spring constant k = 19.9 N/cm, is compressed 24.0 cm and then released. How Far along the incline is the highest point from the release point? I ...continues
An electron is projected with an initial speed of 4.8 *10^5 m/s directly toward a proton that is fixed in place. If the electron is initially a great distance from the proton, at what distance from the proton is the speed of the electron instantaneously equal to twice the initial value?
Solar Intensity on a space flight
A possible means of space flight is to place a perfectly reflecting aluminized sheet into Earth’s orbit and use the light from the Sun to push this solar sail. Suppose a sail of area 6.00 X 10^4 m^2 and mass 6000 kg is placed in orbit facing the sun. The solar intensity of 1380 W/m^2. a. What force is exerted on the sail? ...continues
Hello, The problem is as follows: 2 stationary point charges +3.00 nC and +2.00 nC are seperated by a distance of 50.0 cm. An electron is released from rest at a point midway between the two charges and moves along the line connecting the two charges. What is the speed of the electron when it is 10.0 cm from the +3.00 n ...continues
