3 years ago

Kinematics Equations

Physics

1 answer:

blagie [28]3 years ago

7 0

Haiaiiiiisbdjdnjssjsa

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A stone of mass m is thrown upwards at an angle φ. The moment the stone leaves your hand it has an acceleration (friction is neg

Lelechka [254]

The correct answer is:

= g

Explanation:

When the object leaves the hand it has a force acted on it mainly it’s weight.

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3 years ago

The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the sample

Bezzdna [24]

Answer:

4589.05 year

Explanation:

The relation of activity is given by $A=A_0e^{\lambda t}$ we have given $\frac{A}{A_0}=0.574$

Half life $T=5730\ years$

We know that half life $T=\frac{0.693}{\lambda }$

$\lambda =\frac{0.693}{5730}=1.2094\times 10^{-4}\ per\ year$

So $0.574=e^{-1.2094\times 10^{-4}t}$

$e^{1.2094\times 10^{-4}t}=\frac{1}{0.574}=1.742$

${1.2094\times 10^{-4}t}=ln1.742=0.555$

$t=\frac{0.555}{1.2094\times 10_{-4}}=4589.05\ year$

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3 years ago

What style of art represents people or objects exactly as they appear in life?

frozen [14]

REALISM shows things as they REALLY look.

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3 years ago

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A smooth wooden block is placed on a smooth wooden tabletop. You find that you must exert a force of 22.0 N to keep this 7.00 kg

xxMikexx [17]

Answer:

B . 68.7 N

Explanation:

Given in the question that;

Force = 22 N

Mass = 7.0 kg

Velocity = 4.0 m/s

Gravitational force is the weight of wooden block , calculated as mass times acceleration due to gravity.

F= m* a

F= 7 * 9.81

F= 68.67 N

F= 68.7 N

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3 years ago

Which is one property of coal that makes it ideal for use in a power plant?

photoshop1234 [79]

Answer:

It burns easily & It produces a lot of energy

Explanation:

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4 years ago