A system absorbs 12 j of heat from the surroundings; meanwhile, 28 j of work is done by the system. what is the change of the internal energy δeth of the system?'

How did Ernest Rutherford change the atomic model based on his experimental results? A. He placed electrons in orbits around the nucleus. B. He described the atom as a sea of positive charge sprinkled with electrons. C.

A car traveling on the highway at 15 m/s accelerates at 3.0 m/s2 for 5.0 s. What is its final velocity?

A simple model of the hydrogen atom suggests that the electron orbits the proton. What is the force that keeps the electron in orbit? A. Electrostatic B. Gravitational C. Strong nuclear D. Centripetal

A proton has nearly two-thousand times the mass of a (n) ... a. Electron b. Photon c. Neutron d. Hydrogen atom

Does a wave with the high-pitched have a very low frequency

A 0.60 Kilo gram basketball poses on the rim of a basketball hoop that is 3.0 m high find the potential energy of the ball there (use G=10 N/KG.)

2. What was the role of women as industry increased? A. They gained the vote, B. They became industry leaders, e. They led the household D. They can for government office,

A 26-g steel-jacketed bullet is fired with a velocity of 630 m/s toward a steel plate and ricochets along path CD with a velocity 500 m/s.

A small boat is carrying four people across a river. Without any paddling, the boat moves downstream at a steady speed of 5 m/s. If the average weight of the four people is 60 kg, then what is the speed of the boat after one person gets?

Does temperature affect the dissolving phase?