Yes. It refers to any of the temperatures assigned to a number of reproducible equilibrium states on the International Practical Temperature Scale

In short, Your Answer would be "True"

Hope this helps!

8 0

3 years ago

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A skateboarder jumps horizontally off the top of a staircase at a speed of 14.5 – and lands at bottom of the

Marrrta [24]

Question:

A skateboarder jumps horizontally off the top of a staircase at a speed of 14.5 and lands at bottom of the stairs. The staircase has a horizontal length of 8.00 m. We can ignore air resistance. What is the skater's vertical displacement during the jump?

Answer:

y = 1.48 m

Explanation:

Projectile motion is a two dimensional motion experienced by an object or particle that is subjected near the Earth's surface and moves along a curved path under the influence of gravity only. The path followed by projectile motion is called projectile path.

As the skateboarder followed the projectile path, and we know that in projectile motion the horizontal component of the velocity remain constant throughout his motion. So there is no acceleration along horizontal path.

Also Skateboard jumps horizontally, So initial velocity has only horizontal component.

Horizontal component of initial velocity = $v_{i_{x}}$ = 14.5 m/s

Horizontal displacement = x = 8.00 m

Vertical displacement = y = ?

Using the following formula

x = $v_{i_{x}}$ t

8 = (14.5)(t)

t = 0.55 s

As skateboarder jumps horizontally, So there is no vertical component of velocity.

According to 2nd equation of motion

y = $v_{i_{y}}t + \frac{1}{2}gt^{2}$

As $v_{i_{y}} = 0$

y = 0.5gt²

y = 0.5*9.8*(0.55)²

y = 1.48 m

8 0

3 years ago

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A rotating heavy wheel is used to store energy as kinetic energy. If it is designed to store 1.00 x 106 J of kinetic energy when

valkas [14]

We know, $1\ rpm = \dfrac{2\pi}{60} \ rad/s$ .

$64\ rpm\ is = \dfrac{2\pi}{60}\times 64\ rad/s\\\\= \dfrac{32\pi}{15}\ rad/s$

We know, kinetic energy is given by :

$K.E = \dfrac{I\omega^2}{2}\\\\I = \dfrac{2(K.E)}{\omega^2}\\\\I = \dfrac{2\times 10^6}{\dfrac{32}{15}\times \pi}\\\\I = 298415.52 \ kg \ m^2$

Hence, this is the required solution.

8 0

3 years ago

A scientist finds a piece of rock in a crater. He analyzes the rock and realizes that the composition is mostly of iron and nick

VMariaS [17]

Answer: should be called meteorite

The scientists error is that he refers to the meteorite as a meter however it should be classified as a meteorite since 1 it mostly consists of iron and nickel and 2 it is already on the earths surface.

8 0

4 years ago

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