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Ships A and B leave port together. For the next two hours, ship A travels at 40.0mph in a direction 55.0, What is the distance between the two ships two hours after they depart
Suppose a car is traveling at +21.1 m/s, and the driver sees a traffic light turn red, What is the stopping distance of the car, as measured from the point where the driver first notices the red light
A physics student standing on level ground finds that an imaginary line drawn from his eye to the top of a tree, If his eyes are 5.8 feet above ground, what is the height of the tree
There are two pith balls that are suspended from a pendulum and repel each other, calculate the tension of the string and the mass of the balls
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6311 N when separated by 50 cm, center-to-center, What are the smaller and larger values
A negative charge orbits a positive charge. The orbit is a perfect circle, What is the period of the orbit of the negative charge
The blood flow speed through an aorta with a radius of 1.00 cm is 0.365 m/s, If aorta constricts to a radius of 0.800 cm, how much does blood flow speed increase
A uniform electric field of magnitude 4.10 × 105 N/C points in the positive x direction, Find the change in electric potential energy
A string 3 meters long has a mass of 2 grams. one end of the string is attached to a wall, what is the speed of a transverse wave in this string
A particle with a charge of 4.10nC is in a uniform electric field E? directed to the left, What work was done by the electric force and What is the magnitude of E
If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
An electron with a speed of 7.98 × 108 cm/s in the positive direction of an x axis enters an electric field of magnitude 2.25 × 103 N/C, how much time will have elapsed
In the Bohr model of the hydrogen atom, an electron in the 3rd excited state moves at a speed of 2.43 105 m/s, What is the effective current associated with this orbiting electron
Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 1.70 m long conducting wire, Determine the tension in the wire
An electric field of 11.0 N/C directed due north is superposed on an existing electric field of 15.3 N/C directed due east
A small block is released from rest at the top of a frictionless incline. The block travels a distance 0.263 m in the first second after it is released
Your spaceship lands on a planet that has a gravitational force whose magnitude is 1/5th of Earth's gravitational force. If you weigh 800 N on Earth
A parallel plate capacitor is composed of two square plates, 8.5 cm on a side, separated by an air gap of 1.00 mm, Find the new capacitance
A hot-air balloon is rising upward with a constant speed of 3.88 m/s. When the balloon is 7.87 m above the ground, How much time elapses before the compass hits the ground
A research submarine has a 10-cm-diameter window that is 8.9cm thick, What is the submarine's maximum safe depth in salt water
A mass of 0.006 kg is attached to a spring that requires a force of 0.01 N to extend it 0.05 meters greater than its natural length, Find maximum velocity of spring when released from rest
A woman on a bridge 104 m high sees a raft floating at a constant speed on the river below, She drops a stone from rest in an attempt to hit the raft, Find the speed of the raft
A cement block accidentally falls from rest from the ledge of a 82.4 -m-high building, How much time, at most, does the man have to get out of the way
A dynamite blast at a quarry launches a rock straight upward, and 2.3 s later it is rising at a rate of 18 m/s, calculate blast speed at launch
A 4.90-g lead bullet traveling at 550 m/s is stopped by a large tree, what is the increase in temperature of the bullet