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
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
