A light bulb has a filament of metal that has an emissivity of 0.3 and a surface area of 5.0 x 10^-5 m^2. It is heated to 2500 degrees Celsius in an environment with a temperature of 25 degrees Celsius. What is the power dissipated through radiation by the filament?
A heat engine (thermodynamic cycle) with a fixed amount of working gas is shown in diagram. If the gas temperature at point 3 is 400 K, then how many moles of gas are in the engine? What is the temperature at point 2? Is process stroke 2,3 a heat intake or cooling stroke? How much work is done by process stroke 2,3? How much net ...continues
A round balloon had a radius of 0.30 m & contains nitrogen (N2) at 30 degrees Celsius and one atmosphere total pressure. What is the volume of the nitrogen in the balloon? How many moles of nitrogen are in the balloon? What is the mass of the nitrogen in the balloon? If the balloon is then submerged in a body of fresh water to a ...continues
general physics prob need within a hour
1. [SJ3 7.P.004.] A particle of mass 0.450 kg is shot from P as shown in Figure P7.4. The particle has an initial velocity v0 with a horizontal component of 30.0 m/s. The particle rises to a maximum height of h = 24.0 m above P. Figure P7.4. (a) Using conservation of energy, determine the vertical component of v0. m/s ...continues
6. [SJ3 7.P.024.] A toy cannon uses a spring to project a 5.30 g soft rubber ball. The spring is originally compressed by 5.00 cm and has a force constant of 7.80 N/m. When it is fired, the ball moves 16.0 cm through the horizontal barrel of the cannon, and a constant frictional force of 0.0320 N exists between barrel and ball. ...continues
A neutron in a nuclear reactor makes an elastic head-on collision with the nucleus of a uranium atom initially at rest. (a) What fraction of the neutron's kinetic energy is transferred to the uranium nucleus? (The mass of the uranium nucleus is about 238 times the mass of the neutron.) (b) If the initial kinetic energy of th ...continues
A neutron in a nuclear reactor makes an elastic head-on collision with the nucleus of a uranium atom initially at rest. (a) What fraction of the neutron's kinetic energy is transferred to the uranium nucleus? (The mass of the uranium nucleus is about 238 times the mass of the neutron.) (b) If the initial kinetic energy of ...continues
A 37.0 kg child standing on a frozen pond throws a 0.500 kg stone to the east with a speed of 6.00 m/s. Ignoring friction between the child and the ice, find the recoil velocity of the child. (Assume the positive direction is to the east.) m/s
A 0.300 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200 kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200 kg puck has a speed of 1.00 m/s at an angle of = 54.0° to the positive x axis (Fig. 8.10). Figure 8.10. (a) Determine the speed ...continues
2. [SJ3 8.P.047.] Tarzan, whose mass is 75.0 kg, swings from a 3.00 m vine that is horizontal when he starts. At the bottom of his arc, he picks up 55.0 kg Jane in a perfectly inelastic collision. What is the height of the highest tree limb they can reach on their upward swing? m
