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3 years ago

You have measured the force of a hammer hitting a nail by using a new sensor. The result is 60 million dynes is this reasonable

Engineering

1 answer:

Vesnalui [34]3 years ago

8 0

Answer:

Yes, it is Reasonable.

Explanation:

The problem states that by using a new sensor, the result is 60 million dynes.

Converting the force into Newtons, by using the formula,

1 newton = 10⁵ dynes,

i.e, 1 million dynes = 10 newtons.

we get,

60 million dynes = 60 x 10 newtons = 600 newtons.

The result using a new sensor is reasonable because atmosphere exerts a force of about 10 newtons on us and 600 newtons is just 60 times of it.

Thus 600 N can be applied by the hammer on the nail and it is reasonable.

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Determine the dimensions for W if W = P L^3 / (M V^2) where P is a pressure, L is a length, M is a mass, and V is a velocity.

Eva8 [605]

Correct answer is option E. No dimensions

As we know formula Pressure (P) is $\frac{F}{A}$

also,

Dimensional formula of Pressure is $M^{1}L^{-1}T^{-2}$
Dimensional formula of length is L
Dimensional formula of mass is M
Dimensional formula of velocity is $L^{1} T^{-1}$

So, as given W= $\frac{P*L^{3} }{M*V^{2} }$

Dimensional formula of W = $\frac{M^{1}L^{-1}T^{-2} L^{3} }{M^{1} L^{2}T^{-2} }$

since all terms get cancelled

Work is dimensionless i.e no dimensions

Learn more about dimensions here brainly.com/question/20351712

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1 year ago

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$2.

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1 year ago

True or false? if i were to hook up an ac voltage source to a resistor, the voltage drop across the resistor would be in phase w

hodyreva [135]

Answer: True

Explanation:

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1 year ago

Show that for a linearly separable dataset, the maximum likelihood solution for the logisitic regression model is obtained by fi

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Answer:

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Explanation:

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2 years ago

Ignoring any losses, estimate how much energy (in units of Btu) is required to raise the temperature of water in a 90-gallon hot

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Answer:

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2 years ago