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hearing the siren of an approaching fire truck, you pull over to the side of the road and stop. As the truck approaches, you hear a tone of 460 Hz; as the truck recedes, you hear a tone of 410 Hz. Find speed of the truck.
A grinder consists of a solid 15 kg disk with a diameter of 57 cm. A when active, the disk rotates at a rate of 83 rad/sec. find the rate of angular acceleration of the disk
questionin everyday life we know that something described as white hot is hotter than something described as red hot.
An object is thrown upward with a speed of 14 m/s on the surface of planet X where the acceleration due to gravity is 3.5 m/s2
The light from a distant star takes 252 years to reach the earth. How far away is the star from the earth
An aircraft has a lift-off of 120km/h. (a) What minimum constant acceleration does the aircraft require if it is to be airborne after a takeoff run of 240m (b) How long does it take the aircraft to become airborne
The distance between the moon and the earth is 384,403 km, The orbital period of the moon is about 27.32 days. Calculate the average orbital speed in m/s of the moon
plane polarized light of intensity I0 is passed through two polarizers, the first one at 45 degrees to the original plane of polarization, what intensity is transmitted
The inner cylinder of radius a=3cm has a uniform linear charge density n=4.00E-10 C/m along the axis. The outer cylinder of radius b =6 cm has a uniform linear charge density -n along the axis.
Carbon disulfide (CS2) has a vapor pressure of 300 Torr at room temperature (almost half of atmospheric pressure). estimate the average time between collisions
Consider a rectangle which is constructed with the long side having a length L and the short side having a length 0. 5L. What is the linear speed of the outer edge when the rectangle is again vertical but now is straight down
A small 0.280-kg object moves on a frictionless horizontal table in a circular path of radius 4.30 m. The angular speed is 8.02 rad/s.what is the radius of the smallest possible circle on which the object can move
About 1350 W/m2 of electromagnetic energy reaches the upper atmosphere of the earth from the sun, which is 1.5 × 1011 m away. estimate the average power output of the sun
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