3 years ago

What is the pressure exerted when a force of 20 N is applied to an object over an area of 2 m2 ?

Physics

1 answer:

IgorC [24]3 years ago

8 0

(20 N)/(2 m²) = (20/2) N/m² = 10 Pa

_____

The pascal (Pa) is the derived SI unit of pressure equal to 1 N/m².

You might be interested in

Which is one way that scientists ensure that data is reliable?

kaheart [24]

The way that scientists ensure that data is reliable Clear Explanation

3 0

3 years ago

A proton accelerates from rest in a uniform electric field of 610 N/C. At some later time, its speed is 1.4 106 m/s.(a) Find the

nata0808 [166]

Answer:

a) 5.851× 10¹⁰m/s²

b) 2.411×10⁻¹¹s

c) 1.70×10⁻¹¹m

d) 1.661×10⁻²⁷KJ

Explanation:

A proton in the field experience a downward force of magnitude,

F = eE. The force of gravity on the proton will be negligible compared to the electric force

F = eE

a= eE/m

= 1.602×10⁻¹⁹ × 610/1.67×10⁻²⁷

= 5.851× 10¹⁰m/s²

V = u + at

u= 0

v= 1.4106m/s

v= (0)t + at

t= v/a

= 1.4106m/s/5.851 ×10¹⁰

= 2.411×10⁻¹¹s

S = ut + at²

= (o)t + 5.851×10¹⁰×(2.411×10⁻¹¹)²

= 1.70×10⁻¹¹m

Ke = 1/2mv²

= (1.67×10⁻²⁷×)(1.4106)²/2

= 1.661×10⁻²⁷KJ

5 0

3 years ago

Mr. Rudman drives his race car for 4 hrs at 150<br> miles/hr. How far will he travel?

Lilit [14]

150*4=600
So the answer is 600

7 0

3 years ago

Deserts (especially true deserts) are not easy places for animals to live. Animals who live in them often have special features

mart [117]

Answer:

tolerate heat

Explanation:

5 0

4 years ago

Given that an electric field of 3×106V/m3×106V/m is required to produce an electrical spark within a volume of air, estimate the

Andre45 [30]

Answer:

Length, l = 33.4 m

Explanation:

Given that,

Electrical field, $E=3\times 10^6\ V/m$

Let the electrical potential is, $V=10^8\ V$

We need to find the length of a thundercloud lightning bolt. The relation between electric field and the electric potential is given by :

$V=E\times d\\\\d=\dfrac{V}{E}\\\\d=\dfrac{10^8}{3\times 10^6}\\\\d=33.4\ m$

So, the length of a thundercloud lightning bolt is 33.4 meters. Hence, this is the required solution.

5 0

4 years ago