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4 years ago

If several forces are exerted on a system, calculate the work done by each force, then multiply the results.

Physics

1 answer:

maria [59]4 years ago

4 0

Answer:

false, each force might have a different about and a different direction

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The diagram below shows a desert food web. How will a large decrease in the number of rats impact the food web shown above?

Nookie1986 [14]

Answer:

Decrease of snake, coyote, and hawk population. Increase of sagebrush and cacti.

Reasons:

The rats are aten by the snake coyote and hawks so if a food source is taken from them they are going to have to fight more for food. The rats eat the sagebrush and cacti so if they arent getting eaten as much, they have mroe ime to produce.

7 0

3 years ago

Read 2 more answers

A cosmic ray travels 60.0 km through the earth's atmosphere in 500 μs , as measured by experimenters on the ground. You may want

zavuch27 [327]

Answer:

t' = 458.26 μs

Explanation:

given,

distance traveled by the cosmic ray = 60 Km

time = 500 μs

time taken for the journey according to cosmic ray = ?

now,

$v =\dfrac{distance}{time}$

$v =\dfrac{60\times 10^3}{500\times 10^{-6}}$

v = 1.2 x 10⁸ m/s

according to time dilation formula

$t' = t\sqrt{1-\dfrac{v^2}{c^2}}$

$t' = 500\sqrt{1-\dfrac{(1.2\times 10^8)^2}{(3\times 10^8)^2}}$

t' = 500 x 0.9165

t' = 458.26 μs

6 0

3 years ago

How do the full valance shells of the elements in the far right column of the periodic table affects how they react and take par

7nadin3 [17]

The full valence shell means that they do not react in chemical bonding.
The main purposes of chemical bonding is to obtain a stable structure.

Since the valence shell is stable,there is no need for chemical bonding since the whole atom is stable.

4 0

2 years ago

A machinist measures the length of a bolt. The length is 72.22 cm. What is the length in millimeters?

pochemuha

Answer:

The length of the bolt in millimeters is 722.2 mm

Explanation:

Given;

length of the bolt in centimeters, = 72.22 cm

The length of the bolt in millimeters is given by;

Multiply the length by 10

= 72.22 cm x 10