All categories

3 years ago

A spring scale exerts a net force of 8.5 N on an object. What is the object's mass if it has an acceleration of

Physics

1 answer:

Amiraneli [1.4K]3 years ago

4 0

Answer:

mass of the object is 2.18 kg

Explanation:

Given

Force (F) = 8.5 N = 8.5 kg.m/ $s^{2}$

acceleration (a) = 3.9 m/ $s^{2}$

Mass (m) = ?

We know that the newton's second law of motion gives the relation between mass of ab object. force acted upon and the amount the object is accelerated. It is expressed in the form of an equation:

F = ma

mass, m = F/a

= $\frac{8.5 kgms^{-2} }{3.9 ms^{-2} }$

= 2.18 kg

You might be interested in

A large container contains a large amount of water. A hole is drilled on the wall of the container, at a vertical distance h = 0

hammer [34]

Speed can be found through the application of concepts related to potential energy and kinetic energy, for which you have

$KE = PE$

$\frac{1}{2}mv^2 = mgh$

Where,

m = mass

v = Velocity

g = Gravitational acceleration

h = Height

Re-arrange to find the velocity we have,

$v^2 = 2gh$

$v = \sqrt{2gh}$

$v = \sqrt{2(9.8)(0.54)}$

$v = 3.253m/s$

Therefore the speed at which water squirts out of the hole is .3253m/s

4 0

3 years ago

Explain why understanding bonding is important for understanding molecules.

matrenka [14]

Bond polarity is important because it helps to determine the polarity of molecules and hence their physical properties.

6 0

3 years ago

A solid sphere has a temperature of 614 K. The sphere is melted down and recast into a cube that has the same emissivity and emi

krok68 [10]

Answer:581.87 K

Explanation:

Given

Sphere is melted to form a square

Let the radius of sphere be r and square has a side a

Therefore

$\frac{4\pi}{3}r^3=a^3$

Surface area of sphere $A_s=4\pi r^2$

Surface area of cube $A_c=6a^2$

Total emmisive remains same

Thus $P=A\epsilon \sigma T^4$

$A_sT_s^4=A_cT_c^4$

$\frac{T_c^4}{T_s^4}=\frac{A_s}{A_c}$

$\frac{T_c^4}{T_s^4}=\frac{1}{2}\times \left ( \frac{4\pi}{3}\right )^{\frac{1}{3}}$

$\frac{T_c}{T_s}=\frac{1}{2^{0.25}}\times \left ( \frac{4\pi}{3}\right )^{\frac{1}{12}}$

$T_c=T_s\times \frac{1}{2^{0.25}}\times \left ( \frac{4\pi}{3}\right )^{\frac{1}{12}}$

$T_c=614\times \frac{1.12679}{1.189}$

$T_c=581.87 K$

3 0

3 years ago

Why does the gravitational field strength increase with latitude

otez555 [7]

The second major reason for the difference in gravity at differentlatitudes is that the Earth's equatorial bulge (itself also caused by centrifugalforce from rotation) causes objects at the Equator to be farther from the planet's centre than objects at the poles.

4 0

3 years ago

What can be absorbed or released as the result of a chemical reaction?

Lera25 [3.4K]

Energy is released or absorbed ,but no loss in total molecules,each of which consists of one atom of oxygen and two of hydrogen,are broken down.!

3 0

3 years ago

Read 2 more answers