Friction plays a minimal role in torque application accounting for only 10% of the total torque. Select one: True False
4. A 50 gram piece of iron warms from 0^circ C to 40^circ C while absorbing 900 joules.What is the specific heat of iron?
What happens to a normally open timed contact when voltage is applied to the coil of an off-delay timer? The contact changes immediately from open to closed. There is an immediate heating of the transformer. The contact changes immediately from closed to open. There is an immediate cooling of the transformer.
What determines whether water is solid, liquid, or gas? Choose all that apply. the container in which it is held the humidity of the surrounding air the speed at which the molecules move the distance between the molecules
Forces between particles Increase as the particles move faster and farther apart. __ True False
Particle motion in ice Is square than particle motion in water.
Adding thermal energy to a cup of water can cause particles to do which of the following? Select all that apply. A) move faster B) get farther apart C) move slower D) remain constant E) get closer together
15. The heaviest broccoli on record has a mass of 15.87 kilograms. How does the value of the 5 in the mass of the broccoli compare with the 5 in the mass of the mango above?
When measuring distance between two points, a __ would be the correct lab equipment to use. metric ruler spring scale graduated cylinder ) triple beam balance
Which SI unit for length is greater than a meter? a centimeter b kilometer C millimeter d decimeter
$\square $ Answer Bank KE: 1000.0 J PE: 3000.0 J KE: 0J $PE:4000.0J$ KE: 2000.0 J PE: 2000.0 J KE: 4000.0 J PE: 0J
Learning Log: How do you think you get something to have more kinetic energy?
If a UV light unit has four lamps in it, and each lamp is 7-watt, it is known as a __ 7-watt unit 28-watt unit 11-watt unit 3-watt unit
10. What is the mass of a meteorite that is traveling towards Earth at $1,760m/s$ with a momentum of $33,400kgm/s$
Where is the energy coming from in the lab (where does it start)? A Potential energy in the Cheeto B Potential energy in the water C Kinetic energy inside the water D Kinetic energy in the Cheeto
What should happen to the temperature of the water? A It stays the same B It goes down C It goes up
9. Your local weather report announces that the barometric pressure is 30.44 inHg. Convert this pressure to psi, atm torr, and Pa.
Express the temperature, 275.18 K in degrees Celsius. $548.33^{\circ }C$ $274.17^{\circ }C$ $2.03^{\circ }C$ $120.88^{\circ }C$ $22.78^{\circ }C$
Hubble's Law has led physicists and astronomers to the hypothesis that the universe is expanding. True False
Newton determined that the force of gravity on an object is proportional to its mass causing its mass to be canceled out (Newton's second law) and resulting in a constant acceleration. If the laws of physics are universal, then Newton should be able to apply his discoveries about gravity on Earth to the motion of the planets in our Solar System. Newton's third law says that for every force there is an equal reaction force in the opposite direction. What does this imply about the force of gravity associated with a person standing on the Earth? Choose one: A. The force of gravity on the person cancels out to zero. B. The Earth's gravity pulls downward on the person but also pushes upward on them. C. The Earth's gravity pulls downward on the person, and the person's gravity pulls upward on the Earth. D. There is twice as much gravitational force on the person than there would be if it weren't for Newton's third law.
