All categories

2 years ago

Select the statements that describe a vector. Check all that apply

Physics

2 answers:

kramer2 years ago

6 0

Explanation:

The physical quantities are of two types. They are as follows:

1. Vectors

2. Scalars

The quantities that have both magnitude and direction are called vectors and the quantities having only magnitude are called scalars.

Out of given options the statement that describes vector are :

1. Vectors have size and a direction.

2. Vectors are indicated with arrows.

3. Vectors have both positive and negative values.

lozanna [386]2 years ago

5 0

Vectors have both size and direction.
Vectors are indicated with arrows.
Vectors can have positive or negative values.

You might be interested in

How much gravitational potential energy does a 45.2 kg object have when it is 21.9m above the ground?

Blizzard [7]

Answer:

Explanation:

The formula for gravitational potential energy is

Ep = m · g · h Assuming that the acceleration is g = 10m/s²

Ep = 45.4 · 10 · 21.9 = 9,942.6 J

God is with you!!!

6 0

3 years ago

How might the climate be affected if you were people drove automobiles and more people road bikes or use public transportation l

Hoochie [10]

The level of greenhouse gases in our atmosphere would decrease, due to less automobiles.

8 0

2 years ago

A certain car engine delivers enough force to create 630 N⋅m of torque when the engine is operating at 3200 revolutions per minu

jekas [21]

The appropriate expression for the calculation of power by relating the angular energy in a given time.

In other words the instantaneous power of an angular accelerating body is the torque times the angular velocity

$P=\tau\omega$

Where

$\tau =$ Torque

$\omega =$ Angular speed

Our values are given by

$\tau = 630Nm$

$\omega = 3200rev/min$

The angular velocity must be transformed into radians per second then

$\omega = 3200rev/min (\frac{2\pi rad}{60s})$

$\omega = 335.103rad/s$

Replacing,

$P=(630)(335.103)$

$P = 211.11*10^3W$

$P = 211.1kW$

The average power delivered by the engine at this rotation rate is 211.1kW

5 0

3 years ago

1000 millicoulombs of charge passes through a point. The amount of current passing through the point is

Rzqust [24]

The amount of current passing through the point is 1 A

The amount of current passing through the point can be calculated using the formula below.

⇒ Formula:

Q = i/t......................... Equation 1

⇒ Where:

Q = Charge
i = current
t = time.

⇒ Make "i" the subject of the equation.

i = Qt....................... Equation 2

From the question,

⇒ Given:

Q = 1000 millicoulombs = 1 coulombs
t = 1 seconds. (Assuming the time is 1 seconds)

⇒ Substitute these values into equation 2

i = 1/1
i = 1 A.

Hence, The amount of current passing through the point is 1 A.

Learn more about charges here: brainly.com/question/4158552

3 0

2 years ago

A gun is fired parallel to the ground. at the same instant a bullet of equal size and mass next to the muzzle is released and dr

jolli1 [7]

Both hits the ground <u>at the same time</u> because they have <u>same vertical acceleration</u>

<u></u>

<h3>What is vertical acceleration?</h3>

A vertical acceleration is typically one for which the direction of the vector is vertically upward, usually aligned with and opposite to the gravity vector. But this is a descriptive term, not a rigorous or technical term. A car may accelerate along a road and that would generally be assumed to be a horizontal.

The vector perpendicular to this direction, as perhaps a suspension motion over a bump, would be described as vertical even if it is not strictly vertical.

Note that acceleration is defined as the rate of change of the velocity vector. But the gravitation vector, ‘g’, generally vertically downward, is often denoted by what acceleration a mass in free fall (absent air resistance) would experience, i.e. the relationship between mass and weight.

Learn more about vertical acceleration

brainly.com/question/19528199

#SPJ4

3 0

1 year ago