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The speed of an object and the direction in which it moves constitute a vector quantity known as the velocity. An ostrich is running at a speed of 15.9 m/s in a direction of 57° north of west. What is the magnitude of the ostrich's velocity component that is directed in the following directions?
(a) due north in m/s
(b) due west in m/s
for water nred1.331 and nblue1.340. what are the underwater angles of refraction for the red and blue components of a
A person notices a mild shock if the current along a path through the thumb and index finger exceeds 80 μA. Find the maximum allowable potential difference without shock across the thumb and index finger for a dry-skin resistance of 4 x 10^5 Ω.
An intergalactic rock star bangs his drum every 1.70 s. How fast is the rock star moving relative to the earth
What is the mass in kg of the air in a scuba tank that has an internal volume of 0.01 m3 and it is pressurized o that the density of the air in the tank is 240 kg/ m3
A man holds a double-sided spherical mirror so that he is looking directly into its convex surface, 40.8 cm from his face. The magnification of the image of his face is +0.21. What will be the image distance when he reverses the mirror (looking in..
Calculate velocity of the skydiver of mass m=80kg as a function of time. The air drag coefficient D=100g/m=0.1kg/m.
A wave with a frequency of 200Hz is traveling down a 100m long wire whose total mass if 15 kg. The wire is under a tension of 1000 N. What is the length of the wave?
A subway train has three cars, each weighing 1.20 x 10^5 N. The frictional force on each car is 103 N, and the first car, acting as an engine, exerts a horizontal force of 4.80 x 10^4 N on the rails.
Five seconds later, the police officer leaves on her motorcycle, starts her stopwatch, and accelerates at 2 m/s^2 toward the car. According to her stopwatch, how many seconds until she catches the car
An underwater scuba diver sees the Sun at an apparent angle of 36.0° from the vertical. What is actual direction of the Sun
q1. a 35.0- battery with negligible internal resistance a 90.0- resistor and a 1.75 inductor with negligible resistance
describe the various ways that you encounter and utilize different em radiation in your daily life.original work
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