3 years ago

A nail is an example of a double inclined plane. True False

1 answer:

3 0

Wedges are a type of inclined plane. As a wedge is forced into a space in an object, it exerts force to widen the space. .. so wedges is like a nail.

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If the force acting on a body of mass 4 kg is doubled. by how much will the acceleration change?

mr Goodwill [35]

Answer:

The acceleration will also double

Explanation:

F = m*a

a = F/m

plugging in sample numbers to prove

a= 100/4 = 25

a = 200/4 = 50

3 0

3 years ago

The average lifetime of a poodle dog is 13.0 years. How fast is it traveling, u, relative to an observer who measures the averag

bogdanovich [222]

Answer:

The speed is 0.97 c.

Explanation:

Given that,

Dilated time t'= 50.0 years

Rest time t = 13.0 years

We need to calculate the speed

Using formula of time dilation

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

Where, t' = change in time

t = rest time

v = velocity

c = speed of light

Put the value into the formula

$50.0=\dfrac{13.0}{\sqrt{1-\dfrac{v^2}{(3\times10^{8})^2}}}$

$v^2=\dfrac{(13)^2\times(c)^2-(c)^2\times50^2}{50^2}$

$v^2= 0.9324c^2$

$v=0.97c$

Hence, The speed is 0.97 c.

6 0

3 years ago

How resistance, current, and voltage behave in a series circuit.?

mylen [45]

b.the covalent circuit is held throw magnetic waves

4 0

4 years ago

In science I have to make a project that can solve any real world problems [Grade 6]

Kryger [21]

You can start with a recycling project , it can solve any problems including saving animals, giving clean water, and cleaner environment ofcourse

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2 years ago

Stand on a bathroom scale and read your weight. When you lift one foot up so you’re standing on one foot, does the reading chang

lina2011 [118]

Answer: yes the reading changes,

And a scale reads pressure not force

Explanation:

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3 years ago