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2 years ago

Why is it advised not to hold the thermometer by its bulb while reading it?

Physics

2 answers:

Fiesta28 [93]2 years ago

7 0

Because your body heat might change the temperature

WARRIOR [948]2 years ago

6 0

Answer:

The mercury will expand more due to your own body temperature on your fingers

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A sports car accelerates uniformly from rest to a speed of 87 mi/hr in 8s. Determine: a.The acceleration of the car

Furkat [3]

Answer:

Part a)

$a = 4.86 m/s^2$

Part b)

$d = 155.52 m$

Part c)

$v_f = 48.6 m/s$

Explanation:

As we know that car start from rest and reach to final speed of 87 mph

so we have

$v_f = 87 mph = 38.88 m/s$

now we have

Part a)

acceleration is rate of change in velocity

$a = \frac{v_f - v_i}{t}$

$a = \frac{38.88 - 0}{8}$

$a = 4.86 m/s^2$

Part b)

distance moved by car with uniform acceleration is given as

$d = \frac{v_f + v_i}{2} t$

$d = \frac{38.88 + 0}{2} 8$

$d = 155.52 m$

Part c)

As we know that the car start from rest

so final speed after t = 10 s

$v_f = v_i + at$

$v_f = 0 + (4.86)10$

$v_f = 48.6 m/s$

3 0

3 years ago

A different force is applied to each of four different blocks on a frictionless, horizontal surface. In which diagram does the b

NeTakaya

Answer:

C. 4

Explanation:

6 0

3 years ago

An object moving with a speed of 5m/s comes to rest in 10s after the brakes are applied . What is the initial velocity?

Flauer [41]

Initial velocity is 5m/s.

8 0

2 years ago

Can anyone explain<br>if knows

Aleks [24]

Answer:

Sry I’m just trying to get my points :(

Explanation:

Better luck nest time I would help if I was smart enough but currently I’m as d u m b as a rock...

5 0

3 years ago

Read 2 more answers

A wave passes along the surface of the water in a ripple tank. Describe the motion of a molecule on the surface as the water pas

laila [671]

Answer:

Explanation:

Water waves are generally a transverse wave which do not cause permanent displacement of molecules of the medium. Transverse waves are waves in which the direction of propagation of the wave is perpendicular to the direction of vibration of the particles of the medium.

As the wave propagates from one point to another on the surface of water transferring energy, a molecule of water on its surface vibrates upwards and downwards. Its motion is perpendicular to the direction of propagation of the wave. After the vibration, it comes back to its initial position.

8 0

3 years ago