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iVinArrow [24]
3 years ago
6

I'm bored. ........................

Physics
2 answers:
NeX [460]3 years ago
8 0

Answer:

Explanation:

hi

lisov135 [29]3 years ago
8 0

Answer:

same

Explanation:

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If a 500-pound object is moved 200 feet how much work is being done?
Paha777 [63]

Answer:

D

Explanation:

Work = Distance x Mass

4 0
3 years ago
Find the rms speed of the molecules of a sample of n2 (diatomic nitrogen) gas at a temperature of 31.5°c.
Artemon [7]
The rms speed can be calculated using the following rule:
rms = sqrt ((3RT) / (M)) where:
R is the gas constant =  8.314 J/mol-K
T is the temperature = 31.5 + 273 = 304.5 degrees kelvin
M is the molar mass = 2*14 = 28 grams = 0.028 kg

Substitute with the givens to get the rms speed as follows:
rms speed = sqrt [(3*8.314*304.5) / (0.028)] = 520.811 m/sec
8 0
3 years ago
Blake is setting up his tent at a renaissance fair. If the tent is 8 feet tall and the tether can be staked no more than 2 feet
Mariana [72]
The stake, height and tether length of the tent form a right angle triangle where the tether length is the hypotenuse.
Applying Pythagoras theorem:
length² = height² + (stake distance)²
length = √(8² + 2²)
length = 8.5 feet
3 0
3 years ago
Calculate the power to move a 9j box in 20 seconds​
dalvyx [7]

Answer:

please find attached pdf

Explanation:

Download pdf
3 0
3 years ago
An artillery shell of mass 30 kg has a velocity of 250 m/s vertically upward. The shell explodes into two pieces; immediately af
olga_2 [115]

Answer:

9654.34 m

Explanation:

from conservation of momentum

$$\begin{aligned}30 \times 250 &=-10 \times 120+20 \times V \\20 V &=30 \times 250+10 * 120 \\V &=\frac{30 \times 250+10 \times 120}{20}=435 \mathrm{~m} / \mathrm{s}\end{aligned}$$

And from Conservation of Energy

\frac{1}{2} m v^{2}=m g h\\h=\frac{v^{2}}{2 g}\\h=\frac{(435(m/s))^{2}}{2 \times 9.8(m/s^{2} )}\\h=9654.34 (m)

7 0
2 years ago
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