Physics

a hard billiard ball elastically collides with another hard billiard ball of equal mass. which situation is possible?
1 Answer
a cylindrical steel bar is stretched a distance mm by a force of f in n. the beam was originally d mm in diameter, m long, and has a young's modulus of y n/m2. what is d in terms of the other variables?
1 Answer
what will you use to find the mg of starch for the first time course, ph, and temperature experiments? [4 pts]
1 Answer
a toy monkey hangs from a hook a certain height above the ground. you fire a projectile at the same instant that the monkey drops and starts falling to the ground. in order to hit the monkey with the projectile, you need to
1 Answer
a stationary probe is placed in a fluid flow and measures pressure and temperature as functions of time at one location in the flow. is this a lagrangian or an eulerian measurement? explain.
1 Answer
The large positive charge inside the shell causes equal in magnitude charges distributed on the inner and outer surfaces of the spherical shell. which of the following figures best represents the charge distribution on the inner and outer walls of the shell? (figure 1) view available hint(s)for part a the large positive charge inside the shell causes equal in magnitude charges distributed on the inner and outer surfaces of the spherical shell. which of the following figures best represents the charge distribution on the inner and outer walls of the shell? a. 1 b. 2 c. 3 d. 4 e. 5
1 Answer
consider an electron gun with an accelerating potential of 288 v. what is the wavelength of the emitted electrons? enter the wavelength in nm unit
1 Answer
grandma dynamite accelerates her bus from a stop to 90 m/s in just 12 seconds. what is her acceleration?
1 Answer
what two forces act on a monkey hanging stationary by a vertical vine? which force, if either, is greater?
1 Answer
Work Energy Theorem QUESTION: A 1200kg automobile is moving at 25m/s along level ground. What is the initial KE of the automobile? What is the final KE of the automobile? What is the change in KE of the automobile?What is the work done?
1 Answer
For the circuit shown in Fig. E26.7 find the reading of the idealized ammeter if the battery has an internal resistance of 3.26 ohm
1 Answer
a 3.0 a current is set up in a circuit for 3.0 min by a rechargeable battery with a 9.0 v emf. by how much is the chemical energy of the battery reduced?
1 Answer
steam is to be extracted at a point between the high and low pressure turbines at a pressure that are to determine. the extracted steam will be isobarically heat-exchanged to supply the process hot water and exit the heat exchanger as saturated liquid. this liquid is then throttled to the condenser pressure and mixed with the fluid exiting the lowpressure turbine. the fuel will be natural gas which has a higher heating value (hhv) of 23,860 btu/lbm and an availability of 21930 btu/lbm. the boiler efficiency based on the hhv is 0.85. heat losses from the turbines, pump and lines are assumed negligible and the generator efficiency may be assumed to be 0.90. neglect pressure drops in the piping and heat exchangers.
1 Answer
The bigger the spring constant, the more__________the spring is.
1 Answer
Jack and Jill are maneuvering a 3200 kg boat near a dock. Initially the boat's position is m and its speed is 1.6 m/s. As the boat moves to position m, Jack exerts a force of N, and Jill exerts a force of N.How much work does Jack do?WJack = JHow much work does Jill do?WJill = 0 J (correct)What is the final speed of the boat?vf = m/s
1 Answer
periodic waves are produced by a wave generator at the rate of one wave every 0.50 seconds. what is the period of the wave
1 Answer
which of the choices below correctly lists things in order from largest to smallest? a) local group, solar system, milky way, universe b) universe, milky way, local group, solar system c) solar system, local group, universe, milky way d) universe, local group, milky way, solar system e) milky way, universe, solar system, local group
1 Answer
Can you guys help me on this??
1 Answer
a compressed spring is pushing a block across a rough horizontal table. how many force vectors would be shown on a free-body diagram? name them
1 Answer
you have a mass of 50 kg and are pushed by a 100n force. on the surface of which planet would you have the largest acceleration?
1 Answer
what must the tension in each cable be in the diagram in order to order to support the cargo in static equilibrium?
1 Answer
in parallel circuits, when all resistors are of equal value the total resistance is equal to the value of one individual resistor . a. multiplied by the voltage b. divided by the voltage c. divided by the number of resistors d. multiplied by the number of resistors
1 Answer
explain how different wavelengths of the electromagnetic spectrum are used to gain information about distances and properties of components in the universe
1 Answer
a rock attached to a string swings in a vertical circle. which free body diagram could correctly describe the force(s) on the rock when the string is in one possible horizontal position?
1 Answer