All categories

3 years ago

An object with a mass of 40 kg is acted on by a net force of 680 N.

Physics

1 answer:

just olya [345]3 years ago

3 0

Answer:

The acceleration of the object is $17\ m/s^2$

Explanation:

<u>Force </u>

Newton's second law states the net force exerted by an external agent on an object of mass m is:

F=m.a

Where a is the acceleration produced on the object. The acceleration can be calculated by solving for a:

$\displaystyle a=\frac{F}{m}$

We have an object with a mass of m=40 kg that is acted on by a net force of F=680 N.

Calculate the acceleration:

$\displaystyle a=\frac{680\ N}{40\ kg}$

Calculating:

$a = 17\ m/s^2$

The acceleration of the object is $17\ m/s^2$

You might be interested in

Please help on this one?

navik [9.2K]

the upside down image means an inverted image and for an inverted image, magnification is negative

so the answer is -m

4 0

4 years ago

Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example

nlexa [21]

Answer:

The maximum emf that can be generated around the perimeter of a cell in this field is $1.5732*10^{-11}V$

Explanation:

To solve this problem it is necessary to apply the concepts on maximum electromotive force.

For definition we know that

$\epsilon_{max} = NBA\omega$

Where,

N= Number of turns of the coil

B = Magnetic field

$\omega =$ Angular velocity

A = Cross-sectional Area

Angular velocity according kinematics equations is:

$\omega = 2\pi f$

$\omega = 2\pi*61.5$

$\omega =123\pi rad/s$

Replacing at the equation our values given we have that

$\epsilon_{max} = NBA\omega$

$\epsilon_{max} = NB(\pi (\frac{d}{2})^2)\omega$

$\epsilon_{max} = (1)(1*10^{-3})(\pi (\frac{7.2*10^{-6}}{2})^2)(123\pi)$

$\epsilon_{max} = 1.5732*10^{-11}V$

Therefore the maximum emf that can be generated around the perimeter of a cell in this field is $1.5732*10^{-11}V$

6 0

4 years ago

What is the definition of “potential energy”?

ser-zykov [4K]

Potential energy is the energy stored in matter because of
its position or because of the arrangement of parts.

5 0

3 years ago

Read 2 more answers

What word chemical equation describes second chemical reaction

finlep [7]

Production

Explanation:

Because it is what the frist chemical equation equation or reactant turns into

8 0

3 years ago

which element is reactive an element whose atoms atoms have seven valence electrons or a element whose atoms have eight valence

likoan [24]

Elements with 7 valence electrons are extremely reactive, while elements with 8 valence electrons practically don't react at all.

This is caused by the fact that all molecules want to have 8 valence electrons; that's just the scientific fact. So, if an element already has 8 valence electrons, it doesn't need to react with anything. If the element only has 7 valence electrons, however, it really wants to react with something with 1 valence electron to get to that special number 8.

7 0

3 years ago