Answer:
The power drawn by the toaster is closest to:
(A) 370 W
Explanation:
First we calculate the resistance of the nichrome wire (R).
Where radious (r), resistance coefficient (p), and Length (L)
After replace the value in the ohm law power formula to obtain the power consumed:
Answer:
Explanation:
The kinetic energy of a body is that energy it possesses due to its motion. In classical mechanics, this energy depends only on its mass and speed, as follows:
The speed in an uniformly accelerated motion is given by:
Replacing this expression in the formula for the kinetic energy, we have:
So, if we have :
Equaling (1) and (2) and solving for :
The speed of the ball is B. 5 meters per second
Explanation:
For an object in uniform motion (= at constant velocity), the speed can be calculated using the equation
where
v is the speed
d is the distance covered
t is the time taken
For the ball in this problem:
d = 50 m is the distance covered
t = 10 s is the time taken
Substituting, we find the speed:
Learn more about speed:
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