wilfred_cho Member Profile in The AnswerBank

wilfred_cho

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Joined: 00:47 Tue 21st Sep 2010

Last Activity: 19:31 Sat 02nd Oct 2010

Gender: Male

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wilfred_cho

A fire helicopter carries a 585 kg empty water bucket at the end of a cable 18.6 m long. As the aircraft flies back from a fire at a constant speed of 37.9 m/s, the cable makes an angle of 37.8° with respect to the vertical.

Please Calculate the force of air resistance on the bucket and show your steps please.

wilfred_cho

A 100 kg chesterfield is pushed up a frictionless ramp at a constant speed by a delivery person. If the ramp is inclined at 25.7° to the horizontal, what horizontal force must the delivery person apply to the chesterfield?

The answer is not 383N. Please show your steps.

wilfred_cho

Two vectors A and B have precisely equal magnitudes. For the magnitude of A + B to be 78 times greater than the magnitude of A - B, what must be the angle between them?

not 130° not 178°

wilfred_cho

Vectors A and B have equal magnitudes of 4.98. If the sum of A and B is the vector 6.34j, determine the angle between A and B.

It is not 101° , -101° , 79.1° and -79.1° .

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