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3 years ago

does it require more energy to brew 12 cups with the coffee-maker or reheat 12 cups of coffee in a microwave?

2 answers:

6 0

It would take more energy to reheat 12 cups because only 1 or 2 cups can fit in a microwave rather an than brewing 12 cups in a coffee pot.

Ber [7]3 years ago

5 0

It would take make more energy to brew 12 cups in the coffee-maker.

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A nail gets magnetized when kept close to a magnet

avanturin [10]

In unmagnetized materials the domains are randomly aligned in different directions and cancel each other out. In a magnet all the domains are oriented in the same direction. In the case of a nail, the domains can be aligned in the same direction causing the nail to become magnetic.

3 0

3 years ago

Different bettwen a pair of scissors and nail cutter <br>

Komok [63]

Answer:

One is for hair, paper and other things, the other is for nails.

4 0

3 years ago

an athlete runs 300 m up a hill at a steady speed of 3.0 m/s. She then immediately runs the same distance at 6.0 m/s . What is h

mina [271]

Answer:

4.0 m/s

Explanation:

In the first part of the run, the athlete runs a distance of

$d_1 = 300 m$

at a speed of

$v_1 = 3.0 m/s$

So, the time he/she takes is

$t_1 = \frac{d_1}{v_1}=\frac{300}{3.0}=100 s$

In the second part of the run, the athlete covers an additional distance of

$d_2 = 300 m$

with a speed

$v_2 = 6.0 m/s$

So, the time taken in this second part is

$t_2 = \frac{d_2}{v_2}=\frac{300}{6.0}=50 s$

So, the total distance covered is

d = 300 m + 300 m = 600 m

And the total time taken

t = 100 s + 50 s = 150 s

Therefore, the average speed for the entire trip is

$v=\frac{d}{t}=\frac{600}{150}=4.0 m/s$

4 0

4 years ago

Whta is the mechanical advantage when the effort force is 20 and the resistance force is 5

pogonyaev

The mechanical advantage would be 4. 20/5=4

7 0

3 years ago

Name the organs of Movement in

Sloan [31]

An earthworm moves by using two different sets of muscles. 2. FISHES :- Fish swim by flexing their bodies and tail back and forth. Fish stretch or expand their muscles on one side of their body, while relaxing the muscles on the other side.

3 0

3 years ago