You hear that a storm is moving 15 km/h north. You have been given the storm'

The enthalpy of vaporization of liquid isopropyl alcohol is 45 kJ/mol. Calculate the energy required to vaporize 39.5 g of this compound.

You fire a 50-g arrow that moves at an unknown speed. it hits and embers in a 350-g block that slides on an air track. at the end, the block runs into and compresses a 4000-n/m spring 0.10 m.

Which of the following causes a chemical change? A. burning B. moving C. shattering

1.6*10^5J heat is required to raise the temperature of 10 kg of sand from 14°C to34°C, calculate the specific heat capacity of sand.

What happens if a bar magnet is broken in half? a. Each half becomes demagnetized. b. Each half becomes a new bar magnet with one magnetic pole. c. Each half becomes a new bar magnet with two magnetic poles. d.

How much would a 100kg man weigh on the surface of the sun where the acceleration is 274 m/s

How much current is in a circuit that includes a 9 - volt battery and a bulb with a resistance of 12 ohms?

Find the current Voltage VD and current ID in the following circuit assuming (a) ideal diode. (b) Constant voltage drop model with Von = 0.75V (c) using the exponential model (I_0=1*10^ (-14)). Verify your results through Multisim simulation

Suppose two stars are located in region a of the h-r diagram shown in the figure below. Star X appears much dimmer that Star Y as seen from Earth. Which Star can be inferred to be nearer to Earth, and how do you know?

A student examining a joint observes collagen-rich connective tissue fibers linking the bones, but finds no synovial cavity. Which structural classification fits the observed joint?