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3 years ago

Why are vectors important in physics?

1 answer:

7 0

They are quantities with magnitude and direction like velocity, we'd be doomed without them to be honest , just knowing how fast something is going isn't enough, you want to know where it is going

You might be interested in

What is the wave where the oscillation is perpendicular to the direction<br> of motion.

o-na [289]

A. Oscillating magnetic fields are parallel to oscillating electric fields, which are perpendicular to the direction of wave motion.

4 0

2 years ago

A cube of mass m1=9.6 kgm1=9.6 kg is sitting on top of a second cube of the same size and mass m2=0.8 kgm2=0.8 kg while both are

GalinKa [24]

Answer:N=0

Explanation:

Given

$m_1=9.6 kg$

$m_2=0.8 kg$

both blocks experiencing free fall so net weight of block during free fall is zero thus there is no normal reaction between them.

N=0

8 0

3 years ago

A roller coaster car is going over the top of a 18-mm-radius circular rise. At the top of the hill, the passengers "feel light,"

Andre45 [30]

Answer:

0.29713 m/s

Explanation:

m = Mass of person

g = Acceleration due to gravity = 9.81 m/s²

v = Velocity

r = Radius = 18 mm

By balancing the forces in the system we have

$mg-N=\dfrac{mv^2}{r}\\\Rightarrow mg-\dfrac{mg}{2}=\dfrac{mv^2}{r}\\\Rightarrow v=\sqrt{r(g-\dfrac{g}{2})}\\\Rightarrow v=\sqrt{0.018\times (9.81-\dfrac{9.81}{2})}\\\Rightarrow v=0.29713\ m/s$

The velocity of the coaster is 0.29713 m/s

7 0

3 years ago

During lightning strikes from a cloud to the ground, currents as high as 2.50×104 A can occur and last for about 40.0 μs . How m

Nezavi [6.7K]

Answer:

<h3>The charge transferred from the cloud to earth is 1 Coulomb.</h3>

Explanation:

Given :

Current $I = 2.5 \times 10^{4}$ A

Time $t = 40 \times 10^{-6}$ sec

We know that the current is the rate of flow of charge.

From the formula of current,

Where $Q =$ charge transfer between cloud and earth.

$Q =I t$

$Q = 2.5 \times 10^{4} \times 40 \times 10^{-6}$

$Q = 1$ C

Hence, the charge transferred from the cloud to earth is 1 Coulomb.

3 0

3 years ago

In what sense is energy from coal actually solar energy

Jobisdone [24]

Explanation:

The energy stored in coal is directly form the sun which is solar energy. This energy are preserved in carbon atoms and they originate from the life processes of a plant.

Plants carry out photosynthesis and produce their energy by this process.
Green plants have special adapted structures by which they trap solar energy from the sun and use it to produce their own food.
The food is used by plant for nutrition and life activities.
In essence the solar energy is converted to chemical energy in plants.
To form coal, when plants are rapidly buried their organic matter is preserved from decay by combination with oxygen.
More burial preserves the complex molecules that have stored during photosynthesis.
The carbon eventually aggregates for coal.

learn more:

Coal brainly.com/question/10055728

#learnwithBrainly

5 0

3 years ago