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3 years ago

Name the device of measurement and write its used or its function?

Physics

1 answer:

labwork [276]3 years ago

4 0

Answer:

There is a lot of instruments used for measurement, may I ask which one are you referring to?

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The net external force acting on an object is zero. Is it possible for the object to be traveling with a velocity that is not ze

Rzqust [24]

Answer:

Yes, this is according to the Newton's first law of motion.

Neither its direction nor its velocity changes during this course of motion.

Explanation:

Yes, it is very well in accordance with Newton's first law of motion for a body with no force acting on it and it travels with a non-zero velocity.

During such a condition the object will have a constant velocity in a certain direction throughout its motion. Neither its direction nor its velocity changes during this course of motion.

4 0

3 years ago

A relaxed biceps muscle requires a force of 25.4 N for an elongation of 3.20 cm; under maximum tension, the same muscle requires

beks73 [17]

Answer:

Y = 31750 Pa = 31.75 KPa (For 24.5 N force)

Y = 312500 Pa = 312.5 KPa (For 250 N force)

Explanation:

Since the elongation is constant. Therefore, the strain will remain the same in both cases:

$Strain = \frac{Elongation}{Original\ Length}\\\\Strain = \frac{0.032\ m}{0.2\ m}\\\\Strain = 0.16$

FOR A FORCE OF 25.4 N:

$Stress = \frac{Force}{Area}\\\\Stress = \frac{25.4\ N}{0.005\ m^2}\\\\Sress = 5080\ Pa = 5.08\ KPa$

Now, for Young's Modulus:

$Y = \frac{Stress}{Strain}\\\\Y = \frac{5080\ Pa}{0.16}$

Y = 31750 Pa = 31.75 KPa

FOR A FORCE OF 520 N:

$Stress = \frac{Force}{Area}\\\\Stress = \frac{250\ N}{0.005\ m^2}\\\\Sress = 50000\ Pa = 50\ KPa$

Now, for Young's Modulus:

$Y = \frac{Stress}{Strain}\\\\Y = \frac{50000\ Pa}{0.16}$

Y = 312500 Pa = 312.5 KPa

8 0

3 years ago

Determine What is the efficiency of a machine whose work output is 4 joules, and whose work input is 10 joules?

anastassius [24]

Answer:

The efficiency of the machine is 40 %.

Explanation:

We have,

Output work by the machine is 4 joules and the input work is 10 joules.

It is required to find the efficiency of a machine. The efficiency of a machine is given by the ratio of output work to the input work. It is given as :

$\eta=\dfrac{4}{10}\times 100\\\\\eta=40\%$

So, the efficiency of the machine is 40 %.

8 0

3 years ago

A lava flow baking a rock is an example of which type of metamorphism

JulsSmile [24]

A lava flow baking a rock is an example of: contact metamorphism

Contact metamorphism is a form of metamorphism that CHANGES the texture of the rock.When the lava makes contact with the rock, the structural particle bond that binds the rocks is destroyed because of the extreme heat. This will change the texture of the rock and make it appear baked.

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3 years ago

A glider on an air track moves in the +x direction with a constant acceleration. It has two flags, each exactly 25.4 mm long, wi

Rufina [12.5K]

Answer:

1 The average velocity for first interruption is $u = 0.508m/s$