Other Physics Answers

a. Will a 1200-watt hair dryer operate on a 120-volt line if the current is limited to 15 amperes by a safety fuse? Can two hairdryers operate on this line?

b. Choose from 3A, 5A, 13A, and 30A: Which fuse is the most suitable for a circuit in which a refrigerator rated at 2.0 kW is to be connected to a 220 V supply?

solution please thank you.

How much power is used by a calculator that operates on 8 volts and 0.1 amperes? If it is used for one hour, how much energy does it use?

kindly add solution thank you!

A. What is the resistance of an electric frying pan that draws 12 amperes of current when connected to a 120-volt circuit?

B. How much current is drawn by a lamp that has a resistance of 100 ohms when a voltage of 50 volts is impressed across it?

with solution thank you!

A copper rod is 2.4 meters long at 300K. What will be its length at 320K?

At what temperature is the reading in on the

Fahrenheit scale double that on the Celsius scale?

At what temperature is the reading on the Celsius scale the same as that on the Fahrenheit scale?

The temperature at the surface of the sun is 6000K. Convert this to Celsius, Fahrenheit, and Rankine.

Find the magnitude and direction of the vector represented by each of the following pairs of components:

(a) 𝐴𝑥 = 3.0 𝑐𝑚, 𝐴𝑦 = −4.0 𝑐𝑚;

(b) 𝐴𝑥 = −5.0 𝑚, 𝐴𝑦 = −12.0 𝑚;

(c) 𝐴𝑥 = −2.0 𝑘𝑚, 𝐴𝑦 = 3.0 𝑘𝑚.

5.​ Obtain the value of P₃ (x) using Rodrigues' formula​​​​​       

P_n(x) = 1/(2ⁿ)n! x dⁿ/dxⁿ *(x²-1)ⁿ

if velocity varies with time in quadratic manner then acceleration

A. constant

B. zero

C. linearly varying

D. varies as t^3