Answer:
Magnets are used to make a tight seal on the doors to refrigerators and freezers
They power speakers in stereos, earphones, and televisions
Magnets are used to store data in computer's
magnets are used in the compass
Answer: To determine acceleration ,Micah also needs the Time of the total trip in seconds.
Explanation:
Acceleration can be defined as rate of change of velocity.
for calculating acceleration, initial and final velocity are required in meter per second and the total time of the trip in seconds. Then acceleration is measured in meter per second square.
Thus, Micah knows that a car had a change in velocity of 15 m/s.To determine acceleration ,Micah also needs the <u>Time</u> of the total trip in seconds.
<span>The mechanical energy consisting of potential and kinetic energy is:
0.001 x [ (acceleration of gravity x height) + (1/2) (speed)² ] .</span>
<span /><span>
<span>You want to know how much [ </span><span>mc² </span>] there is in 1 gram of mass.
<span> E = m c² = (0.001) x (3 x 10⁸)² = </span>9 x 10¹³ joules
<span>That's the energy that a 1,000-watt toaster uses </span>
<span>in </span>2,852 years<span> of continuous toasting.</span><span>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span><span>Hope that helped!</span></span>
Answer:
2 and 3
Explanation:
because that's how kinetic and potential energy work