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A cannon shell is fired straight up from the ground at an initial speed of 234m/s. After how much time is the shell at a height of 6.10102m above the ground and moving downward?
You are traveling in a car toward a hill at a speed of 36.4 mph. The car's horn emits sound waves of frequency 231 Hz, Determine the frequency with which the waves strike the hill
1. a mirror has a radius of curvature of 24 cm. mirror is convex. you look at the reflection of your eye while holding
A wooden dowel (cylinder) has a diameter of 2.20 cm. Determine the density of the dowel
You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 10,000 V, What is the breakdown potential of this capacitor
A 5-kg fish swallows an absentminded 1-kg fish swimming towards it at a velocity that brings both fish to a halt immediately after lunch. What is the velocity of the smaller fish before it becomes lunch?
290 Kg piano slides 4.0 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is .40.
A 0.12 m3 rigid tank initially contains refrigerant R-134a at 1 MPa and 100% quality. find the mass of the refrigerant that has entered the tank
What is the escape speed of an electron launched from the surface of a 1.5-cm-diameter glass sphere that has been charged to 8.0 nC ? (v=?)
two spherical objects are separated by a distance that is 1.80 10-3 m. the objects are initially electrically neutral
A 10.0 kg crate is pulled up a rough incline with an initialspeed of 1.5 m/s. The pulling force is 100.0 N parallel to theincline, find the change in kinetic energy of the crate
Does the uncertainty in the theoretical value of Idisk account for the discrepancy in the experimental and theoretical values of Idisk
A photon of red light (wavelength = 720 nm) and a Ping-Pong ball (mass = 2.00 × 10-3 kg) have the same momentum
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