Using Hooke's law, Fspring=kΔx, find the elastic constant of a spring that stretches 2 cm. when a 4 Newton force is applied to it.

A) 1/2N/cm

B) 2N/cm

C) 4N/cm

D) 8N/cm

An object starts at position - 2m with an initial velocity of - 4 m/s and a constant acceleration of + 3 m/s^2. a. In which direction is the object traveling initially? b. What will be the object's velocity after 1s, 2s, 3s? c.

Explain the energy source that powers the volcanoes of Io.

A chemical formula that contains a metal and oxygen

A wooden block has a mass of 20.0 kg and a specific heat of 1700 J/kg °C. Find the change in thermal energy of the block as it warms from 15.0°C to 25.0°C. A) 165,000 J B) 240,000 J C) 280,000 J D) 340,000 J

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic sound that travels 1530 m/s in seawater. find the depth of the water if the time delay of the echo to the ocean floor and back is 26 seconds. (in meters)

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?