Lightning is the result of a build-up of electric charge difference caused by: (a). Violent collision of raindrops. (b). Rapid coalescence of cloud droplets. (c). Riming due to sudden temperature changes. (d). Freezing of supercooled liquid water droplets. (e). Collision of graupe and ice crystals
What is the final temperature of a system with a volume of 88.70mL with an initial temperature of 56.00 Celsius and the volume increases to 899.0mL? 242.4K 32.46K 3335K 57.98K
Multiple Choice 2 points If an air parcel is completely at rest, which of the following forces can make the parcel begin to move? (a) friction (b) centripetal (c) pressure gradient (d) gravity (e) Coriolis
Which of the following is not part of the nucleus of an atom? Electron Noutron Proton
Can the Doppler effect be observed with longitudinal waves or with transverse waves? Longitudinal only Neither Both Transverse only
The pressure in a tire is observed to rise after a car has been driven 5 miles. This is an example of __ Law. Charles' Boyle's
What is torque? The advantage gained by using a mechanism to transmit force A gear that is connected to motor or other input force A robot that gets mobility from wheels, tank treads or another method The measure of a force causing
The piezoelectric crystal of a transducer typically has an impedance higher than the impedance of skin. True False
If a person is struck by lightning, you should not touch them because they carry an electrical charge. True False
A PERSON CAN CARRY ITEMS WHILE ASCENDING AND DESCENDING A MOBILE LADDER? True False
$\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.
