7. A swimmer able to swim at 2.0 m/sec wants to cross a 100. m wide river that flows at 1.2 m/sec. a) At what angle should the swimmer swim in order to reach a point 50 m downstream from the point directly across from where he started? B) what will be the swimmer's speed relative to the shore? C) How long will it take for the swimmer to reach the other side?

Q: 9 and 10. Thanks.

A: 9.The equation for dot product

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Q: 8. An electron is travelling between two parallel plates that are charged with equal magnitude,…

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A: calculate the net magnetic field at point and find direction as per shown.

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Q: Find the frequency of a wave that has a period of 0.063 seconds.

A: If the time period of wave is T, then  Frequency f=1/T

Q: NO.74

A:

Q: Two infinite sheets of current flow parallel to the y-z plane as shown. The sheets are equally…

A: Given:Current through sheet at left, I1 = 2.9 (-k^) A in each wire Current through sheet at right,…

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A:

Q: 3. If V = 12 V in the circuit below R = 100 N R2= 200 N %3| R3 = 100 N R5= 300 N R4 = 150 N R, = 100…

A: Solution: Given that V = 12 V and the values of other resistors

Q: Problem #1) Determine the moment of forces about point 0. F3=75 lb X- 15⁰ 6'-0" Y F₂ = 50 lb 90° Y…

A: Forces F1 = 25 lb,  F2 = 50 lb, F3 =  75 lbdistance between origin and point O (d) = 6 ft

Q: number 25

A:

Q: The block in the drawing has dimensions LO×2L0×3L0.where Lo =0.3 m. The block has a thermal…

A: Give Thermal conductivity = 100j/s-mC  Delta T = 21- 12 ° C = 9 ° c

Q: = 201². The fan blade in a jet engine rotates from rest with the angular acceleration a = 1 9. find…

A: GIVEN         Angular acceleration = α = 20t2