How did Niels Bohr change the atomic model based on his experimental results?
A. He described the atom as a sea of positive charge sprinkled with
electrons,
B. He placed positive material in the atom's center,
C. He placed electrons in orbits around the nucleus.
D. He described electrons as being in clouds outside the nucleus.

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero