A pulley system has 2 masses. A 15 kg mass and a 10 kg mass. The pulley is at rest and the 15kg mass is 10 m from the ground. The pulley is released and the masses start to move.
a) what is the Tension in the cable
b) what is the velocity of the mass just before it hits the ground
c) how much time will it take

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?