A projectile is fired from the surface of the Earth with a speed of 200 m/s at an angle of 45° above the horizontal. If the ground is level
a. what is the maximum height reached by the projectile?
b. What is the range of the projectile?
c. What is the total time in flight?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.