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Questions in physics

📝 Answered - The volume of a gas varies directly with temperature, [tex]$T$[/tex], and inversely with pressure, [tex]$P$[/tex]. Which of the following equations represents that relationship? [tex]$P=k T V$[/tex] [tex]$P=k \frac{T}{V}$[/tex] [tex]$P=k \frac{V}{T}$[/tex] [tex]$P=k \frac{1}{T V}$[/tex] A certain gas has a volume of 10 liters at a temperature of 404 Kelvins (K) and a pressure of 36 Pascals (Pa). If the temperature is raised to 450 K and the pressure is raised to 40 Pa, what is its volume? To the nearest liter, the volume is $\square$ liters.

📝 Answered - A circuit has a voltage drop of 60.0 V across an 80.0 Ω resistor that carries a current of [tex]$0.750 \AA$[/tex]. What is the power used by the resistor? A. 4800.0 W B. 45.0 W C. 60.0 W D. 2.00 W

📝 Answered - What direction is centrifugal force to the force that holds the object in a round path of motion? A. to the left B. to the right C. Directly opposite D. At a right angle

📝 Answered - The device that shuts off an electrical circuit if there is current leakage is known as a:

📝 Answered - Complete the table to show whether each statement describes random errors or systematic errors. | | Random error | Systematic error | | :-------------------------------------- | :----------- | :--------------- | | Cannot be predicted | | | | Can be reduced by averaging results | | | | Includes 'zero' errors | | |

📝 Answered - You have a magnet that you can turn on and off with a switch. What type of magnetism are you using? A. Permanent magnetism B. Induced magnetism C. Electromagnetism D. Contact magnetism

📝 Answered - Which one of the following statements is correct about the fundamental forces in nature and their applications? A. The force that arises in most radioactive processes and in nuclear reactions that generate the Sun's energy is the strong nuclear force. B. The electromagnetic force is the force that keeps protons and neutrons bound together in the nucleus of an atom. C. The force that keeps the nucleus of an atom from flying apart due to the repulsive force between protons is the weak nuclear force. D. The gravitational force makes planets revolve around the Sun and follow their orbital path.

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

📝 Answered - 1. State 4 differences between renewable and non-renewable sources of energy. 2. Calculate the P.E of a pawpaw fruit of mass 5g hanging at a height of 1200cm. Take acceleration due to gravity as 9.8N/kg. 3. A "John Mahama Camboo " of mass 60,000g carrying Principal to campus attained a K.E of 24KJ. Determine its velocity.

📝 Answered - A force of 5 N accelerates an object. The object's mass is 50 g. What is the acceleration of the object? (Formula: F=ma) A. $0.01 m / s ^2$ B. $0.1 m / s ^2$ C. $10 m / s ^2$ D. $100 m / s ^2$