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Mamont248 [21]
3 years ago
14

Please help me on calculating Net Force, examples E and D in the attachment. Would be grateful if you'd explain. Thank you.

Physics
1 answer:
Yanka [14]3 years ago
8 0
The net force is force applied + force friction ( which is negative ) Unfortunately for some reason the numbers are negative, could you ask your teach about that?

Btw, left is usually force fric. which makes it negative

(-750+-250+-550)+1563 = net force

(-792+-632+-100)+(400+900) = net force
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TEA [102]
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3 years ago
On a hot summer day, you and your friends decide to have a picnic at the park. To keep your food fresh you pack your lunch in a
g100num [7]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The <u>Fruit juice </u> should be put in the cooler, because <u>it has the greatest heat capacity</u> and will therefore, <u>absorb the most heat for each degree it increases in temperature.</u>

Explanation:

in order to understand the answer above we need to know what specific heat capacity is

       Specific heat capacity  can be defined as the amount of heat required to raise the temperature of a unit mass of a substance by one degree  

     Looking at the specific heat of each substance suggested we see that the fruit juice has a higher specific heat capacity than others this is because it contains a higher amount of water , generally liquid states of substances have a higher specific heat capacity than other states. The specific heat capacity of fruit juice being the highest among the suggested substances means that it can absorb  more heat for each degree temperature of refrigerator.

8 0
3 years ago
Timmy bikes to school 3 kilometers east and 2 kilometers south. What is Timmy's final displacement?
vovikov84 [41]

Answer:

3.6km South East

Explanation:

Displacement is the shortest distance between the starting point and the ending point and the direction it is displaced in. To calculate the displacement we can use the pythagoras theorem because the 3km East and the 2km south form the two shorter sides of a right angled triangle between the starting and ending points. So, the displacement is the length C of the triangle which we can calculate as follows:

Pythagoras Theorem:

a^2+b^2=c^2

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4+9=c^2

Square root 13 = c

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The total displacement is 3.6km and is in the approximate direction of South East (because he travelled east and south).

Hope this helped!

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timurjin [86]
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5 0
2 years ago
Help 10 points!
adell [148]

chemical energy into mechanical energy as well as heat.

3 0
3 years ago
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