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4 years ago

The mass of a football player who weighs 1250N

1 answer:

5 0

Ah hah ! That depends on where he weighs 1250N, because
weight depends not only on mass but also on the local gravity.
So the same mass can have different weights in different places,
and the same weight can indicate different mass in different places.

Weight = (mass) x (acceleration of gravity) .

Note: 1250N is almost exactly 281 pounds.

-- If he weighs 1250N on Mars, then his mass is 336.8 kg.

-- If he weighs 1250N on Earth, then his mass is 127.5 kg.

-- If he weighs 1250N on the Moon, then his mass is 770.2 kg.

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Two one-coulomb point charges are at a distance of 1.67 m from each other. What is the size of the electric force between the tw

pychu [463]

Explanation:

The given data is as follows.

distance (r) = 1.67 m

$q_{1} = q_{2}$ = 1 C

It is known that formula for electric force between two charges is as follows.

F = $\frac{kq_{1} \times q_{2}}{r^{2}}$

Hence, putting the given values into the above formula as follows.

$\frac{9 \times 10^{9} \times 1 \times 1}{(1.67)^{2}}$

= $3.227 \times 10^{9}$

As it is given that mass of Falcon Heavy rocket is 1421. Therefore, weight of 1 Falcon rocket is as follows.

weight of 1 falcon rocket = $142 \times 10^{3} \times 9.8$

Therefore, number of falcon rockets will be calculated as follows.

No. of falcon rockets = $\frac{3.227 \times 10^{9}}{142000 \times 9.8}$

= $2.31897 \times 10^{3}$

= 2318.9 falcons

Thus, we can conclude that force between the two point charges above is equal to the weight of 2318.9 Falcon Heavy rockets.

5 0

3 years ago

A can of tuna, starting from rest, is dropped off a building. If it is only being pulled down by gravity (-9.8 m/s2) and it hits

tia_tia [17]

Answer:

Explanation:

The distance talks about how far an object has travelled.

Given

9 = -9.8m/s²

t = 3.2s

to get the distance Δx, we will use the formula;

S = ut+1/2gt²

S = 0(3.2)+1/2(-9.8)(3.2)²

S = 0-4.905(10.24)

S = -50.23m

Hence the can of tuna drop by 50.23m

3 0

3 years ago

Coulomb's Law relates which of the following?

Maslowich

Answer:

The force between two charges and the distance separating them.

Explanation:

4 0

3 years ago

What is the atmospheric pressure and temperature at sea level in a standard<br> atmosphere?

Lady bird [3.3K]

Answer:

The tropospheric tabulation continues to 11,000 meters (36,089 ft), where the temperature has fallen to −56.5 °C (−69.7 °F), the pressure to 22,632 pascals (3.2825 psi), and the density to 0.3639 kilograms per cubic meter (0.02272 lb/cu ft). Between 11 km and 20 km, the temperature remains constant

Explanation:

Hope this helped, Have a wonderful day!!

4 0

3 years ago

Gaseous helium is in thermal equilibrium with liquid helium at 6.4 K. The mass of a helium atom is 6.65 × 10−27 kg and Boltzmann

chubhunter [2.5K]

Answer:

162.78 m/s is the most probable speed of a helium atom.

Explanation:

The most probable speed:

$v_{mp}=\sqrt{\frac{2K_bT}{m}}$