Which of the following describes forces? They can be touched. They can be seen on sunny days. They can change motion.
Once triggered, the gate of the __ loses control of the current flow and it will keep conducting. triac SCR both A and B
If you continued to heat a pot of water after it reached its boiling point, what would happen? A. Its temperature would rise above 100^circ C B. Its temperature would drop below 100^circ C C. Its temperature would stay at 100^circ C D. Its temperature would rise above 100^circ C then slowly drop.
The highest tides occur when the __ Earth and Sun are lined up Earth and Moon are lined up and the Sun is at a 90-degree angle Earth and Moon are lined up Sun and Moon are lined up Earth, Sun, and Moon are lined up
110. Related with the radiant energy it is current to say: It is energy in form of electromagnetic waves. It is energy in form of a flow of photons. It is expressed or measured in Joules. All of the above.
What radius must the sphere have so that the acceleration due to gravity at the Earth's new surface would equal the acceleration due to gravity at the surface of the Sun? Express your answer using three significant figures and include the appropriate units. R=Value Units
The search for exoplanets is challenging because of a number of constraints Which of the following is not a constraint? Choose one: A. the distance to exoplanetary systems B. the orbital periods of many exoplanets C. the existence of appropriate Sun-like stars D. the orientation of many planetary orbits in relation to their star E. the proximity of planets to their star
The angular displacement by which the voltage and current are out-of phase with each other is referred to as __ a. the angle theta b. the current angle c. the power angle d. the voltage angle
How can we describe the relationship between volume and matter? A. Volume is not generally measured. B. Volume is unchangeable in most types of matter. C. Volume is more changeable in liquids than gases. D. Volume changes with changes in temperature.
__ 1. True or False:A negative charge exists on a body that loses free electrons. __ 2. What units are used to measure electric field strength? __ 3. When drawing electric lines of force, what direction does __ the charge flow? __ __ 4. What term is defined as the amount of work done when a unit positive charge is transported from the ground to a particular point and no further? __ 5. Write the equation for potential difference relating the work done to the unit of charge. __ 6. Where on a solid object is static charge most concentrated? __ __ __ 7. What is the name given to lines that connect points with the same potential? Define the following term. 8. induction- Briefly answer the following essay question. 9. What is the relationship between force and distance in Coulomb's law of electric force?
What is the relationship between velocity and acceleration? Acceleration is the change in velocity over time. Velocity is the change in acceleration over time. Velocity and acceleration are equal and opposite. Velocity and acceleration have nothing to do with each other.
19. The process by which atomic nuclei spontaneously decay is called relative dating radioactivity erosion deposition 20. The time it takes for 50 percent of the nuclei in a radioactive sample to decay to its stable isotope is called the daughter product geologic time the half-life the half-time 21. The scientist who developed the theory of evolution was Harry Hess James Hutton Charles Darwin William Smith
Radloactive nuclel undergo decay because they are unstable. a TRUE b FALSE
Which of the following would cause a change in the speed of a sound wave? a the wave being made by a larger vibration b the wave moving through water C the wave changing medium from a gas to a liquid d the wave being made by a smaller vibration e none of the above
A man pulls a vacuum forward 13.6 m with a force of 33.9 N at a $55.0^{\circ }$ angle. How much work is being done to the vacuum by the man? $W=[?]J$
Select the cause of evaporation. Waves from the ocean Energy in the clouds Heat from the Sun Rain on the ground
True/False: The mass of the object affects the rate at which it falls. True False
If more force pushes two surfaces together, then the friction between the surfaces will __ stay the same increase decrease
Which of the following is the ideal way to apply pressure onto pedals? Gently at first and then with full force Stomping with force, so it reacts With your entire body weight behind it By pressing gradually
Select all of the types of electromagnetic waves that are ionizing radiation. gamma infrared microwave ultraviolet X-ray
