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A Firefighter of mass 80kg slides down a vertical pole with anacceleration of 5 m/s squared. What is the friction force that acts on the fire fighter?
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Question: A projectile is launched at an angle of 30 deg.Is there any point on the trajectory where V and A are parallel to each other? Is there any point where V and A are perpendicular to each other? The response must ...
A mass m is projected vertically upwards at t = 0 from y = 0 with initial velocity v0 > 0 along the y-axis. (+y is upwards) The mass moves under the constant force of gravity, and also a force of air resistance with magn ...
An observer sees an airplane flying directly overhead and determines that the distance from the wingtip to wingtip subtends and angle of 0.0080 radians. She knows that the wingspan of the airplane is actually 160 feet. W ...
Question: It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station is constructed as a 1000-m-diameter cylinder that rotates about its axis. The inside surface is the de ...
Can you help me with these questions? How can you tell if a single measurement is more precise than another? If the smallest division on a scale is 0.1 mL, to what precision should you take a volume measurement using tha ...
Question: Standing waves on a wire are described by y(x,t)=(ASWsinkx)sin?t, with ASW = 3.00mm , ? = 975rad/s , and k = 0.790?rad/m . The left end of the wire is at x = 0. Part A: At what distances from the left end are t ...
Question: Oppositely charged parallel plates are separated by 5.31 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates? N/C (b) What is the ma ...
Question: The Otto-cycle engine in a Mercedes-Benz SLK230 has a compression ratio of 8.8. A. What is the ideal efficiency of the engine? Use γ=1.40. Express your answer using two significant figures. B. The engine in a ...
Blue-green light has a frequency of about 6.00 x 10^14 Hz. Determine its wavelength. Compare this wavelength to the size of an atom (about 10^-10 m) by calculating the ratio: wavelength/(atom size).
Question: In an old-fashioned amusement park ride, passengers stand inside a3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backsagainst the wall. The cylinder begins to rotate about a verticalaxis. Then the ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As