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A baseball hit just above the ground leaves the bar at 27m/a at 45o above the horizontal.
PartA : how far away does the ball strike the ground?
PartB : how much time is the ball in the air?
PartC: what's the maximum height?
Consider a violin string with a vibrating length of 30 cm. If the speed of a wave on this string is 250 m/s, what is the tension in the string? Hint: You will have to estimate the diameter of the string. Assume the density is the same as that of s..
A uniformly charged, straight filament 3.70 m in length has a total positive charge of 2.00 µC. find the electric field at the surface of the cylinder
A compact disk player has just been turned off. A disk decelerates uniformly from an initial angular velocity of 8.90 rev/s. The disk rotates through 4.50 revolutions before coming to rest. What is the tangential acceleration of a point on the disk 2..
How fast must an alpha particle (m = 6.68×1027 kg, q = 3.20×1019 C) travel perpendicularly to the Earth's magnetic field in a laboratory (B = 5.02×105 T) for it to describe a circular path of radius 2.34 cm
A biologist is investigating the behavior of 2 ants, Alfredo and Bernice. The graph below shows the position of the ants as a function of time as the ants move along the celery stalk.
An 80 kg man is one fourth the way up a 10 m ladder that isresting against a smooth frictionless wall. What is the normal force of the wall on the ladder
A 170 km long high-voltage transmissionline 2.0 cm in diameter carries a steady current of 950 A. If the conductor is copper with a free chargedensity of 8.1*1028electrons per cubic meter, how many years does it take one electronto travel the full ..
Two figure skaters, one weighing 625N and the other 700N , How much kinetic energy is created during the skaters maneuver
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 11.00 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 12.2 cm. Calculate the apparent thickness of the plate as viewed from above the w..
As an electron in a cold hydrogen atom "flips" to align its magnetic moment with the B-field that surrounds its proton, Calculate the frequency and energy of this photon
find the wavelength of a particle of mass m and charge q accelerated through a potential difference v for the
A 8.00 Ω resistor, 10.0 mH inductor, and a 130 µF capacitor are connected in series to a 40.0 V (rms) source having variable frequency. Discover the energy delivered to the circuit through one period if the operating frequency is double the resonance..
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