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The force between two magnets is 0.004N when they are 50 cm apart. The pole strength of one magnet is four times the pole strength of the other magnet. Find the pole strength of each magnet.
The speed of a projectile when it is at its greatest height is root 2/5 times its speed at half the maximum height. What is its angle of projection
Consider a spider walking from the top of a (stationary) beach ball. (Let that angular position = 0O.), At what angle does this slipping begin
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. Calculate the intensity of the sound wave emitted
On a drive from your home to town, you wishto average 33.6 mph. The distance from yourhome to town is 90miles. However, at 45miles(half way), you find you have averaged only25.2 mph.
A 20-cm diameter circular saw blade has a mass of 0.79kg, distributed uniformly as in a disk. What is its rotational kinetic energy at 4400 rpm
The single slit diffraction pattern shown below was made with light with λ = 480 nm. If the slit had a width 9 mm, what is the width w of the central maximum in cm
Consider a bowling ball of mass, m=2kg, and radius, r=25cm. You can think of the bowling ball as a spherical shell. First consider the situation where you impart a linear velocity of, v= 5m/s to the ball (no spin) and let it go on the floor. Approxim..
a point charge of 3.00 microc is located on the x-axis at x 3.50 m next to a spherical surface of radius 2.50 m
A racing car of mass 1000kg moves around a banked track at a constant speed of 30ms. Assuming the total reaction at the wheels is normal to the track and the horizontal radius is 100m. Calculate the angle of inclination of the track to the horizon..
A closely wound, circular coil with radius 2.10cm has 830 turns. What must the current in the coil be if the magnetic field at the center of the coil is 5.00×10?2
At a grinding wheel has an angular velocity of 27.0 rad/s . It has a constant angular acceleration of 25.0 rad/s^2 until a circuit breaker trips at time t = 1.70 s. What was the acceleration as it slowed down
When we look at a particular star, we are seeing it as it was 878 years ago. How far away from us (in meters) is the star
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