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2 years ago

What is the velocity of an object that has been in free fall for 2.5 seconds??

Physics

1 answer:

adoni [48]2 years ago

4 0

Answer:

calculate the free fall distance and velocity without air resistance from, the free fall. i hope that helps

Explanation:

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2 years ago

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You are given a sample of metal and asked to determine its specific heat. You weight the sample and find that its weight is 28.4

lidiya [134]

Answer:

The samples specific heat is 14.8 J/kg.K

Explanation:

Given that,

Weight = 28.4 N

Suppose, heat energy $E=1.25\times10^{4}\ J$

Temperature = 18°C

We need to calculate the samples specific heat

Using formula of specific heat

$Q=mc\Delta T$

$c=\dfrac{Q}{m\Delta T}$

Where, m = mass

c = specific heat

$\Delta T$ = temperature

Q = heat

Put the value into the formula

$c=\dfrac{1.25\times10^{4}}{\dfrac{28.4}{9.8}\times(18+273)}$

$c=14.8\ J/kg. K$

Hence, The samples specific heat is 14.8 J/kg.K

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2 years ago

two teams are playing tug of war. team a pulls to the right with a force of 450n .team b pulls to the left with a force of 415 n

Alex_Xolod [135]

Explanation:

It is given that, two teams are playing tug of war.

Force applied by Team A, $F_A=450\ N$

Force applied by Team B, $F_B=415\ N$

We need to find the net force acting on the rope. It is equal to :

$F_{net}=F_A-F_B$

$F_{net}=450-415$

$F_{net}=35\ N$

So, the net force acting on the rope is 35 N and it is acting toward right. Hence, this is the required solution.

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2 years ago

The power used by an electric tool can be determined by multiplying the _____.

posledela

Power = (current) x (voltage) .

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3 years ago

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two small charged objects repel each other with a force 2.53 when separated by a distance 0.11. if the charge on each object is

Mekhanik [1.2K]

The force between the charges will be 10.9 N.

<h3>What is the electrostatic force?</h3>

The electrostatic attraction particles that make up the electrostatic force behave as both an attracting and a repulsive force. The force is inversely proportional to the square of the distance between them.

F ∝ 1 / r²

F = k / r²

Fr² = k

When two tiny charged objects are 0.11 of a distance apart, they repel one another with a force of 2.53. If the distance between the two particles is cut to 0.053 and the charge on each item is decreased to 67.9% of its initial amount. Then the force will be

F₁r₁² = F₂r₂²

2.53 × (0.11)² = F × (0.053)²

F = 10.9 N

More about the electrostatic force link is given below.

brainly.com/question/9774180

#SPJ4

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11 months ago

What is the velocity of an object that has been in free fall for 2.5 seconds??​

What is the velocity of an object that has been in free fall for 2.5 seconds??