A image formed in a plane mirror is larger than the object ture or false<br><br><br>

How will creat thunderstrom

emmasim [6.3K]

Answer:

the air has to be unstable as well as it needs to be moved upwards.

Explanation:

it needs to be moved upwards and also needs to have unstable air.

3 0

2 years ago

. Orbit of a satellite It is advantageous to place communications satellites in a circular orbit so that their position is fixed

Alexxx [7]

Answer:

a) r = 4.22 10⁷ m, b) v = 3.07 10³ m / s and c) a = 0.224 m / s²

Explanation:

a) For this exercise we will use Newton's second law where acceleration is centripetal and force is gravitational force

F = m a

a = v² / r

F = G m M / r²

G m M / r² = m v² / r

G M / r = v²

The squared velocity is a scalar and this value is constant, so let's use the uniform motion relationships

v = d / t

As the orbit is circular the distance is the length of the circle in 24 h time

d = 2π r

t = 24 h (3600 s / 1 h) = 86400 s

Let's replace

G M / r = (2π r / t)²

G M = 4 π² r³ / t²

r = ∛(G M t² / (4π²)

r = ∛( 6.67 10⁻¹¹ 5.98 10²⁴ 86400² / (4π²)) = ∛( 75.4 10²¹)

r = 4.22 10⁷ m

b) the speed module is

v = √G M / r

v = √(6.67 10⁻¹¹ 5.98 10²⁴/ 4.22 10⁷

v = 3.07 10³ m / s

c) the acceleration is

a = G M / r²

a = 6.67 10⁻¹¹ 5.98 10²⁴ / (4.22 10⁷)²

a = 0.224 m / s²

5 0

3 years ago

Which one of the following lines best illustrates personification?

jekas [21]

C. A narrow wind complains all day.

Personification is a figure of speech wherein animals, objects, and ideas are given human traits or characteristics.

The narrow wind, which is an unseen object, was given a human trait which is complains.

3 0

3 years ago

Read 2 more answers

A plastic rod is charged up by rubbing a wool cloth, and brought to an initially neutral metallic sphere that is insulated from

Pavlova-9 [17]

Answer:

A) is repelled by the sphere.

Explanation:

On rubbing the plastic rod with the wool cloth the rod gains some electrons from the surface of the wool and becomes electrostatically negative in charge.

When this rod is brought near to a neutral metallic sphere then the electrons of the sphere get repelled from the nearest portion of the metallic sphere as it a conductor and the electrons accumulate on the farthest opposite side of the rod.

But when the rod is brought into contact for some time then the from the portion of the rod which is in contact to the sphere loses the electrons from that region to the sphere since plastic is not an electrical conductor so not all the charges travel to the sphere.

Then when the rod is separated, the charges on the sphere spread uniformly and the similar charged rod faces repulsion.

4 0

3 years ago

What is the specific heat capacity of a 250g object that needs 34.125kJ to have its own temperature raised by 65.0∘C

Anestetic [448]

Answer:

Specific heat capacity, = 2.1J/g°C

Explanation:

Given the following data;

Mass = 250g

Quantity of heat = 34.125kJ = 34.125 * 1000 = 34125 Joules.

Change in temperature = 65.0∘C

To find the specific heat capacity;

Heat capacity is given by the formula;

$Q = mcdt$

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

Making c the subject of formula, we have;

$c = \frac {Q}{mdt}$

Substituting into the equation, we have;

$c = \frac {34125}{250*65}$

$c = \frac {34125}{16250}$

Specific heat capacity, = 2.1J/g°C

6 0

3 years ago

A image formed in a plane mirror is larger than the object ture or false​

A image formed in a plane mirror is larger than the object ture or false