4. A motorboat accelerates uniformly from a velocity of 6.5m/s to the west to a velocity of 1.5m/s to the west. If its acceleration was 2.7m/s^2 to the east, how far did it travel during the acceleration?
Matter cannot be created or destroyed. A. True B. False
What happens to a light wave when it travels from air to water? A Its color changes B Its intensity changes C Its speed changes D Its frequency changes
Where are the other elements made? In black holes In stars In the lab
The radiation that __ during the decay of radioactive atomic nuclei is known as gamma radiation. Multiple Choice: Which choice completes the text so that it conforms to the conventions of Standard English? occurs have occurred occur are occurring
5. Thursday What is the symbol used for the following units? Liter square Meter square Gram square
CER - Question Why does water form droplets on a penny instead of spreading out flat?
Match the symbol to the correct term. square x square v_(f) square S square t square a square v_(i) 1. initial velocity 2. final velocity 3. acceleration 4. displacement 5. time 6. speed
Which would scientists predict might happen due to solar flares? (1 point) radio navigation systerins and global positioning systems will be inaccurate high-frequency radio waves used for radio communication will be blocked electrical systems in satellites will fail power grid operations will go offline
Label the following parts of the atom: Protons Neutrons Electrons Nucleus
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
