Part (a):
We know that:
1 kw = 1000 watt ..........> Therefore, to convert watt into kw, we will divide by 1000
1 hour = 60 min ..........> Therefore, to convert mins into hours, we will divide by 60
Based on the above, the conversion results for the two units together would be as follows:
1 watt minute is equivalent to <span>0.000017 kilowatt hours
</span>Now, for the given , we will simply use cross multiplication to do the conversion as follows:
1 watt minute..............> 0.000017 kilowatt hours
750*15 ................> ??
750*15 watt min = 0.19125 kilowatt hour
Part (b):
From part a, we have that the consumption is 0.19125 kilowatt hour per day. Assuming that the year is 365 days, we would have:
yearly consumption = 0.19125 * 365 = 69.80625 kilowatt hour
The cost is 8 cents/kilowatt hour
Therefore:
yearly cost = 69.80625 * 8 = 558.45 cents
Hope this helps :)
If a tennis player does not swing through, meaning they stop swinging the moment they make contact with the ball, they would lose the majority of their power. <em>The momentum that they had built up during the swing is lost the moment they stop swinging</em>, meaning that the ball is hit with a low amount of power.
<em>If the tennis player swings through the whole time they hit the ball, then they keep their momentum as they hit the ball.</em> There is a much higher power level when swinging through than if you were to stop your swing when you hit the ball.
Answer is pituitary gland.
In order to stimulate or inhibit the hormones produced by the endocrine glands, signals are sent to these endocrine glands by the hormones secreted by the pituitary gland.
Consider the following example. When a person is stressed in order to stimulate the production of cortisol, the anterior pituitary lobe will release adrenocorticotropic hormone (ACTH).
Answer:
c. Position C
Explanation:
As the magnetic force is the strongest at the end of the poles and it decreases when it comes to its centre.
Answer:
Explanation:
According to a free body diagram the forces in the horizontal direction on body 1 would be:
F₁ = a₁*m₁ = -N
and on body 2:
F₂ = a₂*m₂ = N - F
N: normal force between the two blocks
F: frictional force on block 2
Since the two blocks are moving together, they need to have the same acceleration:
a₁ = a₂
This gives two equations with two unknown. Solving for a and N gives:
case A:
|a| = 0.96 m/s²
|N| = 2.9 N
case B:
|a| = 0.644 m/s²
|N| = 3.86 N
