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Questions in physics

📝 Answered - Select the correct answer. A forklift raises a crate weighing $8.35 \times 10^2$ newtons to a height of 6.0 meters. What amount of work does the forklift do? A. $2.5 \times 10^3$ joules B. $5.0 \times 10^3$ joules C. $2.4 \times 10^4$ joules D. $4.9 \times 10^4$ joules

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Please do this for me? It’s due in an hour or help me?

📝 Answered - Which is the best example of how electromagnetic energy is used? a. a pot of boiling water on a gas stove b. a patient receiving an X-ray in a hospital c. a car burning gasoline to power the engine d. a car of a roller coaster moving quickly down a slope

📝 Answered - 1. The apparent shift in the position of a star caused by Earth's motion is called A. Revolution B. Stellar Parallax C. An Epicycle D. Retrograde Motion 2. Which form of motion always follows a curved path and requires an initial launch force that is greater than the force of gravity? A. Centripetal Motion B. Free Fall Motion C. Projectile Motion D. None of the Above 3. In the absence of friction, what will happen if you kick a soccer ball in the field? A. It will continue moving at constant speed along the path where it was launched. B. It will stop moving after some time since the force from the kick is no longer present. C. It will move at a constant speed then abruptly it will stop. D. It will move slowly then fast. 4. A person stands 4.50 m from a plane mirror. How far behind the mirror will the image be located? A. 4.50 m B. 9.00 m C. 2.25 m D. 5.67 m 5. According to the law of refraction, light passing from air to glass will cause the light to A. bend away from the normal line. B. bend toward the normal line. C. completely reflect off the glass and back into the air. D. maintain its original course through the glass.

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - A car has a momentum of [tex]$20,000 kg \cdot m / s$[/tex]. What would the car's momentum be if its velocity doubles?

📝 Answered - Show that for an adiabatic change carried out reversibly [tex]$\frac{P 1}{T 2}=\frac{C P}{T 1}=\frac{C P}{R}$[/tex] given that from the first law of thermodynamics [tex]$dE =- dw$[/tex]

📝 Answered - 3. Which of the following is a physical quantity that has both magnitude and direction? A) Vector B) Scalar C) Resultant D) Frame of Reference 4. Which of the following pairs include a vector quantity and a scalar quantity? A) Work - Pressure B) Power - Distance C) Force - Potential Energy D) Velocity - Acceleration 5. The splitting of vectors into two components is called A) Addition of vectors B) Division of vectors C) Resolution of vectors D) Multiplication of vectors

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?