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FinnZ [79.3K]
3 years ago
5

A ball moving horizontally across my desk rolls off at a velocity of 3.3 m/s. Assuming my desk is a height of 0.81 m, how long w

ill the ball be in the air?
Answer in units of seconds. Assume acceleration due to gravity is -9.81 m/s^2
Physics
1 answer:
kogti [31]3 years ago
3 0

Answer:

girl what- I can't answer this but I need points so I'ma just put this random lol sorry tho . ask the tutor

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A 250. mL sample of gas at 1.00 atm and 20.0°C has the temperature increased to 40.0°C and the volume increased to 500. mL. What
ladessa [460]

Answer:

New pressure is 0.534 atm

Explanation:

Given:

Initial volume of the gas, V₁ = 250 mL

Initial pressure of the gas, P₁ = 1.00 atm

Initial temperature of the gas, T₁ = 20° C = 293 K

Final volume of the gas, V₂ = 500 mL

Final pressure of the gas = P₂

Final temperature of the gas, T₁ = 40° C = 313 K

now,

we know for a gas

PV = nRT

where,

n is the moles

R is the ideal gas constant

also, for a constant gas

we have

(P₁V₁/T₁) = (P₂V₂/T₂)

on substituting the values in the above equation, we get

(1.00 × 250)/293 = (P₂ × 500)/313

or

P₂ = 0.534 atm

Hence, the <u>new pressure is 0.534 atm</u>

5 0
3 years ago
All organisms need energy to function. Which cell organelle provides this energy
AnnyKZ [126]
Mitochondria is the cell organelle the provides energy to function it also helps in respiration .It is called also as the power house of the cell
8 0
3 years ago
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Objects 1 and 2 attract each other with a gravitational force of 45 units. If the mass of Object 1 is doubled, then the new grav
Novosadov [1.4K]

Explanation:

Fgravity = G*(mass1*mass2)/D²

so, if you double one of the masses, what does that do to our equation ?

Fgravitynew = G*(2*mass1*mass2)/D²

due to the commutative property of multiplication

Fgravitynew = 2* G*(mass1*mass2)/D² = 2* Fgravity

so, the correct answer will be 2×45 = 90 units.

4 0
3 years ago
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Answer:

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Explanation:

a = f / m

a = (67N - 6N) / 9 kg

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8 0
3 years ago
If the current in each wire is the same, which wire produces the strongest magnetic field?
sveta [45]

Answer:

C

Explanation:

I did this before

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3 years ago
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