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3 years ago

Give two differences between Mass and weight

Physics

1 answer:

nydimaria [60]3 years ago

8 0

Answer:

my opi

Explanation:

Mass is like the inside of the weight. weight is just home much it weighs

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Perception Distance + Reaction Distance + Braking Distance = _____________.

scZoUnD [109]

Answer:

option B) is correct

Explanation:

perception distance is the distance traveled by the vehicle when the driver perceive the hazard situation.

reaction distance is the distance traveled by the vehicle after seeing the hazard situation and reacting to it.

Braking Distance is the distance traveled by the vehicle after applying the brake.

so, the sum of Perception Distance + Reaction Distance + Braking Distance is called the total stopping distance

hence option B) is correct .

4 0

3 years ago

A block of wood of mass 24 kg floats on water. The volume of the block below the surface of the water and the density of the woo

Slav-nsk [51]

Answer:

0.024m^3

Explanation:

=======

Answer:

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Given:-

Mass of the block of wood = 24 kg

Volume of wood = 0.032 m^3

Density of water = 1000kg/m^3

Now,

Density of wood is given by,

\frac{m}{v} = \frac{24}{0.032} \\

\frac{m}{v} = 750 \: kg/m ^{3}

Therefore,

The density of wood is 750kg/m^3

By principle of floatation,

Mass \:of\: wood = Mass\: of\: liquid \:displaced

Therefore,

Mass of liquid displaced = 24kg

Volume of liquid displaced (v),

\frac{m}{v} = \frac{24}{1000} \\

\frac{m}{v} = 0.24m ^{3}

Now,

Since the volume of the wood is equal to the volume of water displaced, it is 0.024m^3

=====

Note:

=====

=> The volume of the wood below the water surface is the volume of water displaced.

=> Buoyant\: force = Weight\: of\: the \:displaced\: water.

8 0

3 years ago

Sound is an example of a ____ Wave.

sesenic [268]

Answer:

Mechanical Waves

Explanation:Sound waves in air are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves. A vibrating string can create longitudinal waves.

7 0

2 years ago

Read 2 more answers

If a snail moves 6.5in/min, how many miles per hour does the snail travel?

Arturiano [62]

Answer:

Unit Conversion

6.5in/min× 1ft/12in× 1 mile/5280ft= 0.001231 m/min
0.001231 m/min× 60 min/1hr= 0.0738 miles/hr

7 0

2 years ago

A tire swing hanging from a branch reaches nearly to the ground. How could you estimate the height of the branch using only a st

AlexFokin [52]

Answer:

Explanation:

With the help of expression of time period of pendulum we can calculate the height of the branch . The swinging tire can be considered equivalent to swinging bob of a pendulum . Here length of pendulum will be equal to height of branch .

Let it be h . Let the time period of swing of tire be T then from the formula of time period of pendulum

$T = 2\pi\sqrt{\frac{l}{g} }$ where l is length of pendulum .

here l = h so

$T = 2\pi\sqrt{\frac{h}{g} }$

$h = \frac{T^2g}{4\pi^2}$

If we calculate the time period of swing of tire , we can calculate the height of branch .

The time period of swing of tire can be estimated with the help of a stop watch . Time period is time that the tire will take in going from one extreme point to the other end and then coming back . We can easily estimate it with the help of stop watch .

4 0

3 years ago

Give two differences between Mass and weight​

Give two differences between Mass and weight