All categories

3 years ago

PHYSICAL SCIENCE NOT PHYSICS 40 PTS

Physics

2 answers:

Lelu [443]3 years ago

5 0

Answer:

The answer would be D; All of the Above

Explanation:

Trust me brudda

ira [324]3 years ago

3 0

The answer is D, the main purpose of scientific models is to represent pragmatic objects, physical processes and phenomena in a more reasonable and objective way. Hope this helps you out.

You might be interested in

An object is placed at a distance of 60 cm from a concave lens of focal length 30cm.find the position and nature of the image?

ladessa [460]

Answer:

using the lens formula: 1/f = 1/u + 1/v

focal length f = -30 (negative because it is concave lens)

object distance u = 60

image distance v= unknown

1/-30 = 1/60 + 1/v

v = -20

So, the image is 20cm from lens (on the same side along with the object), and it is virtual (because of negative sign) and erect (concave lens must produce erect images).

5 0

3 years ago

How does refraction support the particle theory of light? Particles bounce off surfaces similar to the way in which a ball bounc

AnnyKZ [126]

Forces act on the particles to push or pull them from one medium to another.

8 0

3 years ago

Read 2 more answers

Two identical small charged spheres are a certain distance apart, and each initially experiences an electrostatic force of magni

sweet-ann [11.9K]

Answer:

d) 1/4 F

Explanation:

The magnitude of electrostatic force between stationary charges is described by Coulomb's law. This law states that this force is proportional to the magnitudes of the charges:

$F\propto q_1q_2$

When each of the spheres has lost half its initial charge, we have:

$q_1'=\frac{q_1}{2}\\q_2'=\frac{q_2}{2}$

So, the new electrostatic force is:

$F'\propto q_1'q_2'\\F'\propto \frac{q_1}{2}\frac{q_2}{2}\\F'\propto \frac{q_1q_2}{4}\\F'\propto\frac{1}{4}F$

5 0

3 years ago

An unstrained horizontal spring has a length of 0.40 m and a spring constant of 340 N/m. Two small charged objects are attached

Hatshy [7]

Answer:

(a) Both the charges are positive or negative.

(b) Teh value of each charge is 1.53 x 10^-5 C.

Explanation:

Spring constant, K = 340 N/m

Natural length, L = 0.4 m

stretch, y = 0.033 m

(a) Let the charge on each sphere is q and they repel each other so the nature of charge of either sphere may be both positive or both negative.

(b) The electrostatic force is balanced by the spring force.

$\frac{kq^2}{(L + y)^2}=Ky\\\\\\\frac{9\times 10^9 q^2}{(0.4 +0.033)^2} = 340\times0.033\\\\q= 1.53\times 10^{-5} C$

6 0

3 years ago

An object accelerates at 32 m/s² when a force of 71 N is applied to it. What is the object’s mass? show your work

amid [387]

Answer:

Its answer is 2.21 kg.

Explanation:

F =m × a

71 = m × 32

71 ÷ 32 = m

2.21 kg = m

6 0

3 years ago

*PHYSICAL SCIENCE NOT PHYSICS* *40 PTS*

PHYSICAL SCIENCE NOT PHYSICS 40 PTS