Which statement is NOT evidence of the plate tectonic theory? PLS SOMEONE HELP QUICK

What do you think would happen to the force of attraction of two interacting charges if their distance apart is halved?

sweet [91]

Answer:

The new force becomes 4 times the initial force.

Explanation:

The force of attraction or repulsion is given by the relation as follows :

$F=k\dfrac{q_1q_2}{d^2}$

Where

d is the distance between the interacting charges

F is inversely proportional to the distance between charges.

If the distance is halved, d'=(d/2), new force is given by :

$F'=k\dfrac{q_1q_2}{d'^2}\\\\=k\dfrac{q_1q_2}{(\dfrac{d}{2})^2}\\\\=k\dfrac{q_1q_2}{\dfrac{d^2}{4}}\\\\=4\times \dfrac{kq_1q_2}{d^2}\\\\F'=4F$

So, the new force becomes 4 times the initial force.

4 0

3 years ago

a diver of mass 101 kg jumps upward off a diving board into water. Diving board is 6m above water. Diver has a speed of 1.2m/s.

8090 [49]

When the diver reaches maximum height, the upward velocity will be zero.

We shall use the formula
v^2 = u^2 - 2gh
where
v = 0 (velocity at maximum height)
u = 1.2 m/s, intial upward velocity
g = -9.8 m/s^2, gravitational acceleration (downward)
h = maximum height attained above the diving board.

Therefore
0 = 1.2^2 - 2*9.8*h
h = 1.2^2/(2*9.8) = 0.0735 m

Answer: 0.074 m (nearest thousandth)

5 0

3 years ago

3. With a you can measure just about anything.

Degger [83]

MULTIMETER combines the functions of ammeter, voltmeter and ohmmeter as a minimum.

5 0

3 years ago

Why do balloons make noise when they pop?

mixer [17]

The pressure of the air inside the balloon is higher than outside, and when you pop the balloon, the high pressure air expands quickly and makes a popping sound.

6 0

3 years ago

Read 2 more answers

The weight of an astronaut plus his space suit on the Moon is only 319 N. How much (in N) do they weigh on Earth?

zheka24 [161]

Answer:

The weight of an astronaut plus his space suit on the Earth is 1,931.69 N.

Explanation:

Newton's second law, called the fundamental law or fundamental principle of dynamics, states that a body accelerates if a force is applied to it. This law indicates that the net force applied on a body is proportional to the acceleration that the body acquires. The constant of proportionality is the mass of the body, so Newton's second law is expressed in the following formula:

F = m*a

Where:

F is the net force. It is expressed in Newton (N)
m is the mass of the body. It is expressed in kilograms (Kg).
a is the acceleration that the body acquires. It is expressed in meters over second squared (m/s²).

The weight of an astronaut plus his space suit on the Moon is only 319 N. Then, being:

F= weight= 319 N
m= ?
a = acceleration of the Moon's gravity, whose value is 1.62 m/s²

you get:

319 N= m* 1.62 m/s²

Solving:

$m=\frac{319 N}{1.62 \frac{m}{s^{2} } }$

m=196.91 kg

The mass is an invariable quantity, regardless of the planet in which the astronaut plus his space suit on the Moon is, then you have:

F= weight= ?
m= 196.91 kg
a = acceleration of the Earth's gravity, whose value is 9.81 m/s²

replacing in the definition of force:

Weight= 196.91 kg* 9.81 m/s²

Weight= 1,931.69 N

The weight of an astronaut plus his space suit on the Earth is 1,931.69 N.

6 0

3 years ago