What would be an example of diffuse light? the glow of a warning light on a car's dashboard the beam of a flashlight the light of a lamp that illuminates every corner of a room

Question 3(Multiple Choice Worth 1 points) (06.09 MC) A clock moves past you at a speed of 0.9 c. How much time passes for you for each second that elapses on the moving clock? 0.436 s 1.15 s 2.29 s Infinity

At one instant a heavy object in air is moving upward at 20m/s Five seconds later its speed is approximately 50m/s 30m/s 70m/s 40m/s

Which type of energy works by removing electrons from atoms to produce electricity? A. Geothermal B. Wind C. Solar D. Nuclear

Substance A, a solid , at 80^circ C is put into substance B, a liquid, at 60^circ C Which among the following explains the energy change between A and B? A absorbs heat and B releases heat. Both A and B releases heat. A releases heat and B absorbs heat. Both A and B absorb heat.

The density of a substance remains the same regardless of the amount of substance present. A True B False

What happens when you push the button of a doorbell? The current going through the doorbell rapidly switches directions. The electromagnet becomes stronger. The switch is closed. completing the circuit.

Which of the following exhibit the Tyndall Effect? A laser beam through a soda drink. A flashlight beam through air in a room. Car headlights on a foggy night. A laser beam through salt water.

Which option states the principle behind the law of conservation of mass and the law of conservation of energy? Energy and mass are the properties that scientists measure when studying physical changes and chemical reactions. Energy and mass cannot be created or destroyed during physical changes or chemical reactions. An object's energy and mass have a direct relationship with that object's temperature. An object's energy and mass have an indirect relationship with that object's temperature.

Heat energy is measured in __ a. Fahrenheit b. Celsius c. Amperes d. British thermal units

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Fill in the Blank Question Along the trajectory of a projectile, the $\square $ velocity remains constant, because there is no $\square $ in that direction. C Need help? Review these concept resources. Read About the Concept

What is the missing particle for the following nuclear decay process? ${}_{55}^{137}Cs\rightarrow _{56}^{137}Ba+?$ ${}_{1}^{0}\alpha $ ${}_{-1}^{0}\beta $ ${}_{1}^{0}\beta $ ${}_{0}^{1}n$

The diameter of a hydrogen atom is about meters. A protein molecule has an overall length of 3000 times (or $3\times 10^{3}times)$ the diameter of a hydrogen atom. What is the length of the protein molecule,. in meters , if it were written in scientific notation? $3.15\times 10^{-8}meters$ $3.15\times 10^{-12}meters$ meters $3.15\times 10^{-7}meters$

Which quantity will have the units "rad/s"? A linear displacement B angular displacement C linear velocity D angular velocity

What happens to the water pressure when water moves on a downward slope through layers of rock and soil? the water pressure increases the water pressure is unchanged the water pressure decreases the water pressure decreases then increases

An electron is a __ charged particle. a. negatively J. neutrally c. positively C B A

In order to maximize the thermal effects of ultrasound, the treatment area should be no more than three (3) times the size of the soundhead surface. True False

Question 2 (2 points) Why is Ohm's Law relevant? Ohms law is extremely important to the world of electrical circuits and components but is not suitable for every electrical circuit and application. There are certain requirements that a circuit and electrical component should meet to ensure that Ohms law is applicable. Ohms law can be used to calculate the required value of Voltage or components within a circuit, it can also work out the amount of current that flows in an electrical circuit when resistors can be measured across electrical components such as voltage. Ohm's Law is not relevant Ohm's Law is only used in a DC circuit.

What is a room designed to absorb sound called? anechoic chamber reflection chamber echo chamber absorption chamber

True or false, all else being equal, water flows with a higher velocity thorough a semi- circular channel than a wide, shallow channel. True False