Physics Answers

Find the center of mass of four 2kg bodies placed at eachcorner of a square

of side 1.5 m.

Shs students are walking in the coridor towards the east. One has a velocity of 45m/s and the other is 21m/s. Calculate the magnitude and direction of the resultant

(a)The following resistors are in parallel: 1000, 800, 500, 200, and 100 (. What is the total resistance?

(b) What resistance value in parallel with 100 ( produces a total resistance of 40 (?

(a) A 10 ( resistor, a 11 ( resistor and a 39 ( resistor are connected in series across a potential difference of 120 V. Calculate the voltage drop across the 10 ( resistor.

(b) Three resistors, whose values are 35 (, 45 (, and 85 (, are connected in parallel across a 35 V battery. What is the current through the 35 ( resistor

What is the peak value of a sinusoidal alternating current of 4.78 r.m.s amperes

What is the r.m.s value of a rectangular voltage wave with an amplitude of 9.87V

What is the average value of sinusoidal alternating current of 31A maximum value?

An alternating current has a periodic time of 0.03seconds. what is its frequency?

(a)An alternating current is represented by i =70.7 sin520t. Determine

Its frequency

The current 0.0015 second after passing through zero and increasing positively

(b) A sinusoidal ac current is given by i = 100 sin∏t. it will achieve a value of 50A after _____ seconds. 

calculate the temperature on the platinum scale corresponding to 400 degree celsius on a thermometer

If bock 1 weighs 50 kg, while block 2 weighs 90 kg , determine the external force p2 so that block 2 will maintain its position. Let p1 be equal to 5kN.Assume 0.3 coefficient of statics friction

A light bulb can’t exceed 0.02A, else it will burn out. If it's connected in series to these resistors (100Ω, 15Ω, 30Ω, 310Ω, xΩ) on a 9V battery, what is the approximate value of the 'x' resistor in the circuit that will produce the maximum current through the bulb ?

Calculate the wavelength of thermal neutrons at 20 degree Celsius

Maskbyte is the furthest star from earth. It has a mass of 0.123 times the mass of planet Mekaverse. Calculate the orbital radius and velocity of a planet which has a measured orbital period of 20.4 days!

If a metric ton is 1.000×10^3 kg how many 85 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton