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A fireman d = 49.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of ?i = 27.0° above the horizontal as shown in the figure. If the speed of the stream as it leaves the hose is vi = 40.0 m/s, at what height will the stream of water strike the building?
m
How much force is the air exerting on the front cover of your textbook? (Assume that the width and the length of the book are 22.9 cm and 28.8 cm, respectively
Estimate, from these data, the effective distance between the atoms.
An ideal gas occupies a volume of 1.8 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container
A 52-kg pole vaulter running at 13 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s, determine her altitude as she crosses the bar
A mouse travels along a straight line; its distance x from the origin at any time t is given by the equation x = (8.5cm x s^-1)t - (2.5cm x s^-2) t2. Find the average velocity of the mouse
bob whose mass is 36 kg stands at the center of a 200 kg merry-go-round that is spinning at 30 rpm. What is the spinning rate now
How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.41 105 N/C at a point 8.60 cm from the center of the sphere
An 18 g rifle bullet traveling 210 m/s buries itself in a 3.9kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. find the vertical and horizontal components of the pendulum's displacement.
You place a long straight wire on top of your compass, and the wire is a height of 3 millimeters above the compass needle. calculate the approximate angle the needle deflects
A person does 100 joules of work of pulling back the string of the bow. What will be the original speed of a 0.5 killogram arrow when it's fired from the bow.
A Toyota Prius driving north at 61 and a VW Passat driving south at 42 are on the same road heading toward each other.
In what direction should the plane head in order to fly.
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