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4 years ago

What is a tornado? Details

Physics

2 answers:

ohaa [14]4 years ago

6 0

A tornado is a natural force It is a very strong wind that causes thing to damage

kotykmax [81]4 years ago

5 0

A tornado is pretty much dirt wind and debris inside of a spinning vertex

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ASAP When salt is dissolved in water, the result is a A. gas B. compound C. homogeneous mixture D. heterogeneous mixture

alisha [4.7K]

It’s actually C. homogeneous compound because when they combine you can’t separate them

4 0

3 years ago

Read 2 more answers

A large box sits on a rough floor. A person pushes on the box with a horizontal force of magnitude 50 N. The box remains at rest

artcher [175]

Answer:

The magnitude of the frictional force is $F_f \ge 50 \ N$

Explanation:

From the question we are told that

The force exerted on the box is $F = 50 \ N$

Generally for the box to remain at rest then it means that the frictional force is greater than or equal to the force applied to move it i.e

$F_f \ge F$

=> $F_f \ge 50 \ N$

5 0

3 years ago

1. What is the momentum of a 0.15 kg arrow that is traveling at 120 m/s?

Korvikt [17]

For this case we have that by definition, the momentum equation is given by:

$p = m * v$

Where:

m: It is the mass

v: It is the velocity

According to the data we have:

$m = 0.15 \ kg\\v = 120 \frac {m} {s}$

Substituting:

$p = 0.15 * 120\\p = 18 \frac {kg * m} {s}$

On the other hand, if we clear the variable "mass" we have:

$m = \frac {p} {v}$

According to the data we have:

$p = 250 \frac {kg * m} {s}\\v = 5 \frac {m} {s}\\m = \frac {250} {5}\\m = 50 \ kg$

Thus, the mass is $50 \ kg$

Answer:

$p = 18 \frac {kg * m} {s}\\m = 50 \ kg$

3 0

3 years ago

will the value of g be affected by the radius of the earth? consider the real shape of the earth. compare the acceleration due t

sp2606 [1]

Answer:

Yes, the value of g affected by the radius.

Explanation:

The formula for the force of gravity of 2 objects is

$F_{gravity} = G\frac{m_{1}m_{2}}{r^2}$ , where m1 and m2 are the masses of the 2 objects, r is the radius, and G is the gravitational constant, which is approximately $6.67 \cdot 10^{-11}$ .

Therefore, as the radius if bigger, the force of gravity is going to be smaller exponentially.

5 0

4 years ago

Ocean waves travel in to the beach at an average velocity of 2.5 m/s

ANTONII [103]

1) D) 10.0 m

To find the average distance between the wave peaks, we can use the formula:

$v=\frac{d}{t}$

where in this case:

v = 2.5 m/s is the average velocity

d = ? is the average distance

t = 4 s is the time between two wave peaks

Re-arranging the equation, we find

$d=vt=(2.5 m/s)(4 s)=10.0 m$

2) B) Power

This is exactly the definition of power. In fact, power is defined as the ratio between the amount of work done / of energy used, and the time taken for this conversion to occur:

$P=\frac{W}{t}$

where

W is the amount of work done / of energy used

t is the time taken

3) C) The body builder uses the same energy and but more power.

The energy used by the body builder does not change: in fact, it is only related to the height at which he lift the weight. The work done to lift the weight, of mass m, up to a height of h, is given by

$W=mgh$

where g is the gravitational acceleration. So, this quantity does not change. Instead, the power changes, because the time the body builder takes to lift the weight up has decreased, and the power depends on the time as we know from the formula:

$P=\frac{W}{t}$

so, since t has decreased, P has increased.

4) D) body mass, final height, and the time required to complete the climb

The power output is given by:

$P=\frac{W}{t}=\frac{mgh}{t}$

where:

m is the body mass

g is the gravitational acceleration

h is the final height

t is the time required to complete the climb

Therefore, we see that correct choice is D.

5 0

3 years ago