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2 years ago

Define velocity is the question

Physics

2 answers:

kherson [118]2 years ago

5 0

$\huge\boxed{ \sf\purple{αɳʂɯҽɾ \huge\redღ︎︎}}$

$\sf{Velocity \: is \: the \: speed \: of \: something \: in \: a \: given \: direction.}$

Oxana [17]2 years ago

4 0

Answer:

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).

Explanation:

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Calculate the momentum pelephant of a 2140 kg elephant charging a hunter at a speed of 7.63 m/s . pelephant= kg⋅m/s Compare the

Zepler [3.9K]

Answer:

Momentum of elephant is greater than momentum of tranquilizer dart

Explanation:

$m_e$ = Mass of elephant = 2140 kg

$m_d$ = Mass of tranquilizer dart = 0.0415 kg

$v_e$ = Velocity of elephant = 7.63 m/s

$v_e$ = Velocity of tranquilizer dart = 619 m/s

Momentum of elephant

$p_e=m_ev_e\\\Rightarrow p_e=2140\times 7.63\\\Rightarrow p_e=16328.2\ N.s$

Momentum of tranquilizer dart

$p_d=m_dv_d\\\Rightarrow p_d=0.0415\times 619\\\Rightarrow p_d=25.6885\ N.s$

So, $p_e>p_d$

Momentum of elephant is greater than momentum of tranquilizer dart

7 0

3 years ago

What is the difference between the contagion theory and the convergence

posledela

Answer: Contagion theory states that crowds cause people to act in a certain way; convergence theory says the opposite, claiming that people who wish to act in a certain way come together to form crowds.

Explanation: Its C

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2 years ago

When you hold a cold glass of water in your warm hand, which way does the heat flow ?

Tanya [424]

Heat flows naturally from a warmer object (higher energy) to a cooler one (lower energy).

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3 years ago

A student needs to prepare 100.0 mL of vitamin C solution according to the directions in Part 1 of the experiment. S/he weighs o

Rudiy27

Answer:

4.99 mg of vitamin C are in the beaker.

Explanation:

Given that,

Weight of vitamin = 0.0499 g

Molar mass = 176.124 g/mol

Weight of water = 100.0 ml

We need to calculate the mg of vitamin C in the beaker

We dissolve 0.0499 g vitamin C in water to from 100.0 ml solution.

100 ml solution contain 49.9 mg vitamin C

Now, we take 10 ml of this vitamin C solution in breaker

Since, 100 ml solution =49.9 mg vitamin C

Therefore,

$10\ ml\ solution =\dfrac{10\times49.9}{100}$

$10\ ml\ solution =4.99\ mg$

Hence, 4.99 mg of vitamin C are in the beaker.

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3 years ago

Please help will be marked most brainlist !!!

Neko [114]

Answer:

Explanation:

all of the rest are true

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2 years ago