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A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 4.1 rad/s; 45 radians later, its angular speed is 16 rad/s. Calculate (a) the angular acceleration (rad/s2), (b) the time required to complete the 45 radians, (c) the time required to reach the 4.1 rad/s angular speed, and (d) the number of radians from rest until the time the disk reaches the 4.1 rad/s angular speed.
In an ice show, a 60.0 kg skater leaps into the air and is caught by an initially stationary 75.0 kg skater. What is their final velocity assuming negligible friction
A 38 ohm resistor is made from a coil of copper wire whose total mass is 11.2 g. Find out the length and diameter of the wire.
The box of a well-known breakfast cereal states that one ounce of the cereal contains 107 Calories (1 food Calorie = 4186 J). what is the weight of the heaviest barbell
A bicycle wheel, 65 cm across, is half buried in dirt, standing on edge. What was the beetle's average velocity and speed from the time it started climbing until it hit the ground
What is the magnitude of the acceleration of the speck of clay on the edge of a potter's wheel turning at 50 (revolutions per minute) if the wheel's diameter is 38.0 cm.
A 8.5 omegacap.gif resistor and a 5.9 omegacap.gif resistor are connected in series with a battery. Find the potential difference across the battery
A spherical rain drop carries a charge of 2.70E-8 C and has a potential of 5.76E+4 V at the surface, Find the surface area of the drop
If you charge a pocket comb by rubbing it with a silk scarf, how can you determine if the comb is positively or negatively charged.
Show that the uncertainty principle can be expressed in the form ΔL Δθ is greater or equals to h/2 where θ is an angle and L is the angular momentum. for what uncerainty in the angular momentum will the angular position of a particle be completely un..
A brick of mass M sits on a rubber pillow of mass m . Together they are sliding to the right at constant velocity on an ice-covered parking lot, Draw a free-body diagram of the brick and identify each force acting on it
The average density of the planet Saturn is 688 kg/m3. The acceleration of gravity on its surface is 11.20 m/s2. Calculate the average radius of Saturn
Two equally charged particles, held 22.4 cm apart, are released from rest. The initial acceleration of the first particle is observed to be 4.0 m/s2 and that of the second particle is 6.0 m/s2. If the mass of the first particle is 3.40 x 10-7 kg, ..
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