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A cycle wheel is rotating at 47rpm when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.47 rad/s2. a) Find what is the wheel angular velocity, in rpm, 14 second later?
b) Find how many revolutions the wheel makes during this time?
The escape velocity of a bullet from the surface of planet Y is 1727 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.490 times that of Y, and its radius is 0.8790 times the radius of Y (in m/s).
A person in a kayak starts paddling, and it accelerates from 0 to 0.8 miles/hour in a distance of 0.8 km. If the combined mass of the person and the kayak is 80 kg, what is the magnitude of the net force acting on the kayak
One of the harmonic frequencies of tube A with two open ends is 845 Hz. The next-highest harmonic frequency is 910Hz.
High voltage power lines are made of aluminum and often start with an electric potential of around half a million volts, How much potential is lost due to resistance in the lines as a function of length
A rifle with a mass of 2.5 kg fires a bullet with a mass of 5.5 g (0.0055 kg). The bullet moves with a muzzle velocity of 330 m/s after the rifle is fired. What is the momentum of the bullet after the rifle is fired
A car moving at 150km/h (93mph) is approaching a stationary police car whose radar speed detector operates at a frequency of 15Ghz
transverse pulses travel with a speed of 200 ms along a taut copper wire whose diameter is 1.50 mm. what is the tension
Two resistors have resistances R(smaller) and R(larger), where R(smaller)
An electron with a speed of 1.1 × 107 m/s moves horizontally into a region where a constant vertical force of 5.6 × 10-16 N acts on it. determine the vertical distance the electron is deflected
A lamp which is 9.0 cm tall is in front of a concave mirror which has a focal length of 53.0 cm. (a) How tall is the lamp's image if the lamp is a distance of 26.5 cm from the mirror (include sign if negative)
question engineers have developed a bathyscaph that can reach ocean depths of 5.3 mi.nbsp if the density of seawater is
An automobile and a truck start from rest at the same instant, withthe automobile initially at some distance behind the truck. The truck has a constant acceleration of 2.04 m/s^2, and the automobile an accelerationof 3.30 m/s^2. The automobile ove..
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