Physics Answers

A straight Beam of ultrarelavistic electrons confined within a very long cylindrical region of radius less than 1 mm carries a current of 0.01 uA. The strength of the electric field at a point 2cm away from the beam axis will be nearest to

One person produces heat at a rate of 5454 W. What is the temperature rise produced in 3030 min by two people in an airtight room of 4747 m3 volume, initially at 0degrees Upper C ° C and at 105 Pa? It is supposed that all the heat is absorbed by the air. Upper K right parenthesis = 0.72 kJ / (kg · K) and M = 29 g / mol are given

A man climbs a ladder carrying a hammer of mass 0.5kg.If the ladder makes an angle of 30 with the vertical and is 3m long, How much work does the man do on the hammer?

Write down centre of mass semi circular ring.

two cars are moving with same velocity c/3.these are perpendicular to each other .find relative velocity.

Person is jogging at 7m/s and then accelerated for 2 seconds covering a distance of 60 meters. What is the acceleration?

Monica rides her bike off a ramp moving at 4.5 m/s at an angle of 24˚ to the ground.


What is the vertical component of the velocity of Monica and her bike?

You are the veterinarian at a zoo that has 21 zebras. Each zebra needs to get four intravenous shots (over the course of a month) of a vaccination against Zebra Zombie Disease. Each injection contains 750 mg of the active vaccination agent. How many grams of the active vaccination agent should you order for the month?

As part of your physics class, you calculated your automobile’s average fuel usage over a short interval of time and found it to be 28 MPG. If you drive an average of 120 miles per week and the cost of gasoline averages $2.75 per gallon, how much do you spend per year on gasoline?