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3 years ago

Which of the following are vector quantities?

Physics

2 answers:

pshichka [43]3 years ago

8 0

Answer:

Vector Quantity: A physical quantity is said to be a vector quantity when it has both magnitude and direction. The scalar quantities are distance, mass, time, volume, density, speed, temperature, and energy, The vector quantities are weight, velocity, acceleration, and force.

Explanation:

Mark me brainleist PLZZZZ

devlian [24]3 years ago

6 0

The answer to your question is force, velocity, acceleration and momentum!!

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A moving car has momentum. if it moves twice as fast its momentum is ____________ as much

Nikolay [14]

It's momentum is twice as much.

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3 years ago

An electric iron is used to remove wrinkles from clothing. The electric iron is made of metal. Which property of this substance

Hoochie [10]

Answer:

Explanation:

the heat can move through the metal and onto the clothing

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3 years ago

A 234.0 g piece of lead is heated to 86.0oC and then dropped into a calorimeter containing 611.0 g of water that initally is at

Vaselesa [24]

Answer: $24.70 ^{\circ}C$

Explanation:

Given

mass of lead piece $m_l=234 gm\approx 0.234 kg$

mass of water in calorimeter $m_w=611 gm\approx 0.611 kg$

Initial temperature of water $T_w=24^{\circ}C$

Initial temperature of lead piece $T_l=24^{\circ}C$

we know heat capacity of lead and water are $125.604 J/kg-k$ and $4.184 kJ/kg-k$ respectively

Let us take $T ^{\circ}C$ be the final temperature of the system

Conserving energy

heat lost by lead=heat gained by water

$m_lc_l(T_l-T)=m_wc_w(T-T_w)$

$0.234\times 125.604(86-T)=0.611\times 4.184\times 1000(T-24)$

$86-T=\frac{0.611\times 4.184\times 1000}{29.391}(T-24)$

$86-T=86.97T-2087.49$

$T=\frac{2173.491}{87.97}=24.70^{\circ}C$

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3 years ago

Why isn't iron used to make coin

AleksandrR [38]

If iron were used to make coins then it would rust easily,because of its exposure to water, air etc..

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Read 2 more answers

which component of the Star Wars movies is possible according to our current understanding of physics?

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3 years ago