Eating a meal three hours prior to a sporting event can hard performance true or false

A calorimeter contains 0.50 kg of water at 15°C. A 0.040-kg block of zinc at 115°C is placed in the water. The specific heat of zinc is 388 J/kg °C and the specific heat of water is 4184 J/kg °C What is the final temperature of the system?

Semi-trailer trucks have an odometer on one hub of a trailer wheel. The hub is weighted so that it does not rotate, but it contains gears to count the number of wheel revolutions-it then calculates the distance traveled. If the wheel has a 1.

What affect do mass and distance have on the force of gravity?

What would you do to decrease the resistance in a circuit?

a toy airplane is flying at a speed of 8 m/s with an acceleration of 0.9 m/s^2. How fast is it flying after 2 seconds?

Which of these rocks are formed by volcanic activity? select the two correct answers. a. limestone b. granite c. marble d. basalt e. sandstone

Give a critical discussion on why hardness test needs to perform in engineering practice. b) Discuss 2 possible source of errors (other than parallax error) and how it's can effect the result.

Which of the following best describes what occurs in a fusion reaction?

The period of a wave is 10 seconds and it's wavelength is 2 meters. What is the wave's speed?

The vectors of the magnetic field around a long, straight, current-carrying wire are: A-concentric with the wire B-radial to the wire C-tangential to the wire D-parallel with the wire