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2 years ago

Which of the following is a vector quantity?

Physics

1 answer:

djverab [1.8K]2 years ago

4 0

Vector quantity is defined by direction as well as magnitude both

so now lets discuss all option

1) distance = it is total path length between two points so there is no direction needed in it so it is scalar

2) Speed = it is ratio of total distance covered and total time, so it also do not require any direction.

3)velocity = it is ratio of displacement and time, and displacement is always given with direction so velocity is a vector quantity

4) time = time is the measurement of the interval of two events and we do not require any direction in it so its a scalar quantity.

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A major physical disability usually leaves people ________ than able-bodied people with depression. Most patients "locked in" a

Ierofanga [76]

Answer:

happier; do not

Explanation:

A major physical disability usually leaves people __happier______ than able-bodied people with depression. Most patients "locked-in" a motionless body ____do not____ indicate they want to die.

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3 years ago

Read 2 more answers

Equations of motion ?

kirill [66]

Explanation:

There are five equations of motion:

v = at + v₀

Δx = v₀ t + ½ at²

Δx = ½ (v + v₀)t

v² = v₀² + 2aΔx

Δx = vt − ½ at²

Δx is the displacement

v₀ is the initial velocity

v is the final velocity

a is the acceleration

t is time

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3 years ago

The presence of which element would indicate that a star is going through a high-mass star life cycle as opposed to a low-mass s

Delicious77 [7]

Celestial bodies in the universe like the stars, gain their energy by nuclear fusion. This is a nuclear reaction that emits radiation by joining subatomic particles together to yield another new element. This cause by instability of certain elements due to their high neutron-to-proton ratio. The most stable element there is, is Fe-26. Elements lighter than Fe-26 are most likely to undergo nuclear fusion (combining), while elements heavier than Fe-26 are most likely to undergo nuclear fission (breaking).

So that is how the Sun gains its energy. It is very abundant in hydrogen, such that hydrogen undergoes nuclear fusion. Two protons from two hydrogen atoms combine at very very high temperatures to form a Helium atom. Therefore, a high-mass star life is very abundant in Hydrogen, while a low-mass star life is very abundant in Helium.

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3 years ago

Read each scenario and then answer the question scenario a 120 J of work is done in 6 seconds Scenario b 160 J of work is done i

Zielflug [23.3K]

Answer:

all scenarios are using the same power

Explanation:

we know that power is defined as P(Watts)=W(Joules)/t(seconds).

When applying this formula to each of the scenarios we find:

$\frac{120J}{6s}=\frac{160J}{8s}=\frac{200J}{10s}= 20W$

Done

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3 years ago

If an apple experiences a constant net force, it will have a constant

Evgesh-ka [11]

Answer:

As Force = Mass × Acceleration. So If mass is constant, the acceleration would also be constant, in presence of a net external constant force!

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3 years ago