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2 years ago

Which of the following is considered to be a vector?

Physics

2 answers:

AVprozaik [17]2 years ago

8 0

Answer: B) Velocity

Explanation:

Velocity is a vector quantity. Velocities have both magnitude and direction.

jok3333 [9.3K]2 years ago

4 0

Answer:B. Velocity

Explanation:

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The two cyclists travel at the same speed on level ground. They approach a low hill and decide to coast up instead of hard pedal

Sergeeva-Olga [200]

Answer:

Option-(E): Bike B; its wheels have a smaller moment of inertia.

Explanation:

The two cyclists travel at the same speed on level ground, as they approach a low hill and decide to coast up instead of hard pedaling. At the top of the hill, as bike "B" will have a larger speed, as compared to the bike "A".Due, to the effect of having smaller moment of inertia, I=m×r².

Having no friction nor air resistance, and all the wheels roll on the ground without slipping. While, the B have larger speed,v due to the fact that bike "B" will have a larger speed,"v" as compared to the bike "A".

3 0

3 years ago

Calculate 2 x 10^-3cm ÷ 2.5 x 10^4cm

Mamont248 [21]

Here is your answer:

First find the notations:

2×10^-3
=0002
And...
2.5×10^4=25000

Then divide:

0002÷25000=8E-9

Your answer:
=8 x 10-8

3 0

3 years ago

In 1985, during the construction of a skyscraper in Austin, Texas, the remains of a mastodon were unearthed. If only 1/64 of the

Art [367]

Answer:

34,380 years

Explanation:

The remaining amount of a radioactive isotope is found as the product of the original amount by (1/2) raised to the number of half-lives elapsed. The formla is:

M = M₀ × (1/2)ⁿ

Where M is the remaining amoun, M₀ i s the initial amount, and n is the number of half-lives.

Here, 1/64 of the original carbon-14 remained, meaning that M/M₀ = 1/64.

Then, you can substitute in the equation and solve:

(1/64) = (1/2)ⁿ

(1/2⁶) = (1/2ⁿ)

2⁶ = 2ⁿ

6 = n

Then, 6 half-lives elapsed since the mastodon died and the remains were dated.

Then, you must multiply 6 by the half-life time:

6 × 5730 years = 34,380 years ← answer

8 0

3 years ago

Heat energy is a form of _____ energy.

love history [14]

Heat energy is a form of kinetic energy

5 0

3 years ago

Read 2 more answers

In a golf ball game, a person hits the golf ball with a club. The club is in contact with the ball, which is initially at rest,

Anon25 [30]

Answer:

F=4040.81 N

Explanation:

Given that

Time ,t= 2.45 ms

Mass ,m= 0.055 kg

v= 1.8 x 10² m/s = 180 m/s

We know that rate of change in the linear momentum is known as force.

Momentum P = m v

$F=\dfrac{dP}{dt}$

Therefore force F

$F=\dfrac{\Delta P}{\Delta t}$

$F=\dfrac{0.055\times 180}{2.45\times 10^{-3}}\ N$

F=4040.81 N

Therefore force on the ball will be 4040.81 N

6 0

3 years ago