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When throwing a baseball, a force is exerted by the hand on the ball.
a. Is this force a contact force or a field force? Contact Force
b. Throwing a ball 6 m straight upwards needs a 25 N throwing force. How strong is the throwing force it experiences when the ball is half way to the top? At the very top? Half way back downwards?
Since throwing is a contact force, once the ball is not in contact with the hand there is no more force. hence, the answer to all is 0 N
A flat aluminum plate of 0.2 m thickness is initially at 120 Celsius. At time t=0, it is immersed in a liquid at 10 Celsius. Assume a very large heat transfer coefficient on both t
Alternatives to prevent tuberculosis - Another possible regimen for treatment of latent TB is daily rifampin alone for 4 months, which may be useful in persons intolerant to is
An e.m.f. of 25V is induced in a coil of 300 turns when the flux linking with it alters by 12mWb. Find the time, in milliseconds, in which the flux makes the change. An ignitio
Is a godd illuminator is bigger better? This is somehow surprising that manufacturers place huge emphasis in the power consumption, stating with a machine is 50, 100 or 400 Wat
The resultant of two forces 3P and 2P is R. If the first force is doubled then the resultant is also doubled. then the angle between the two forces us. plz xplain with the solution
Ultraviolet catastrophe: A shortcoming of the Rayleigh-Jeans formula, that tries to explain the radiancy of a blackbody at several frequencies of the electromagnetic spectrum.
A Balloon is inflated with Air by connecting it to a well insulated 100 L gas canister. Initially the air canister is at a pressure of P C1 = 9 MPa and at a temperature of T C1 =
what is the significne of electric field?
expression for the interference in transmitted light through thin films
Which of the subsequent represent the two kinds of basic (single-concept) electric potential problems?
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