Physics Questions and Answers

How can you find the mass of an object given the net force and acceleration?

Which is an example of reflection?

What are the 8 types of energy?

What is the value of 96,745 joules in BTUs?

Define the terms: LIFR IFR MVFR VFR

The freezing point of water corresponds to: A. 0 Kelvin B. 100 Kelvin C. 273 Kelvin D. 373 Kelvin

How do you find an element based on its PES (photoelectron spectroscopy) spectrum?

What do you think of the butterfly effect? Use at least one example in your answer.

Why would the spring tide produce a stronger tide than the neap tide?

"What is the SI unit for momentum? A. m/s² B. kg·m/s C. N·m D. N/m²"

What are the units for impulse? A. kg•m/s B. kg/s C. kg•m^2/s D. kg•m/s^2​

"2 psia is equivalent to A. 29 in. Hg. B. 28 in. Hg. C. 27 in. Hg. D. 26 in. Hg."

"Parallax error means that: There is an error between surfaces that are not perfectly parallel to each other. There are measurement errors that are completely opposite of one another. There is a visual error caused by viewing two objects, one above the other, at an angle. There is a math error in adding up the readings of a micrometer or a vernier caliper."

Provide real-world examples of gravitational potential energy.

Describe four main types of resistant forces.

Temperature and kinetic energy have a ________ relationship.

"Which equations are used to calculate the velocity of a wave? A. velocity = distance × time B. velocity = wavelength × frequency C. velocity = distance/time D. velocity = wavelength/frequency"

"Which of the following is the best definition for inertia? A. The mass of an object divided by its volume B. The relationship between action/reaction force pairs C. The tendency of an object to resist changes to its motion D. The amount of mass an object has"

Which of the following have quantized values? # Choose one or more: The pitch of a note played on a slide trombone because the pitch varies based on the position of the slide. The energy needed to excited an electron from a lower energy orbital to the next energy level. The pitch of a note played on a flute because the pitch is dependent on the number of holes that are open or closed. The wind speed on the top of Mt. Everest because the wind varies continuously.

"What did Rutherford's gold-foil experiments prove the existence of? A. The protons B. The entire atom C. The nucleus D. The electrons outside the nucleus"

What is the equation for the fundamental frequency?

"In a perfect vacuum, light waves travel at 300,000 kilometers per second. When light waves travel through materials, such as air, they: A. speed up B. slow down C. increase in amplitude D. heat up"

"What is absolute zero? What is the temperature of absolute zero on the Kelvin and Celsius scales?"

What is the velocity if the wavelength is 1m and the frequency is 345Hz?

"The concept of energy can be calculated in multiple ways. Which units are used for energy? Check all that apply. joules kilogram meters2/seconds2 newtons kilojoules meters/seconds2"

"Which statement best describes the law of conservation of energy? A. Natural resources need to be conserved. B. The conservation of energy is unrelated to the conversion of energy. C. Energy cannot be created or destroyed. D. Energy can be destroyed but not created."

"Two hundred joules of energy would be equivalent to how many foot-pounds? 100 foot-pounds 200 foot-pounds 300 foot-pounds 400 foot-pounds"

How do you find average velocity on a velocity-time graph?

"Is speed a vector or a scalar quantity? A. Scalar quantity B. Vector quantity"

"Which type of wave requires a medium in which to travel? A. Heat B. Electromagnetic C. Light D. Mechanical"

"Which of the numbers below correctly describes 1,250 volts? A. 0.00125 MV B. 0.125 MV C. 1.25 MV D. 1,250 MV"

Longitudinal waves move up and down.

What is the formula to calculate applied force?

What is the formula for finding net force?

Is mass an intensive or extensive physical property?

"What is the approximate room temperature on the Kelvin scale? A) 0 Kelvin B) 100 Kelvin C) 273 Kelvin D) 1000 Kelvin"

"Convert 100 Newtons to kilograms, then choose the correct answer. 98 kg 22.4809 kg 9.8 kg 100 kg"

What is the equation for potential energy? (Note: The answer is not given in the task. The equation for gravitational potential energy is typically written as PE=mgh, where m is mass, g is the acceleration due to gravity, and h is height.)

Q6. The term h₀ represents the amount of energy needed to vaporize a unit mass of saturated liquid at a specified temperature or pressure. It can be determined from h₀ = h₀ - h₁. a) Is it true that it takes less energy to vaporize 1 kg of saturated liquid water at 100°C than it would at 120°C? Substantiate your answer using **values** from Table A-4. **(8)** b) Based on your result on (a), does vaporization energy increase at higher temperature or decreases at higher temperature? **(2)** | TABLE A-4 | | | | | | | | | | | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

What is the pressure in pascals if a 200 N force is applied to an area of 0.5 m²?