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4 years ago

To calculate the _____ of a moving object, divide the displacement by the time interval in which the displacement occurred.

Physics

2 answers:

marusya05 [52]4 years ago

5 0

Answer: Speed

Explanation: Scalar quantity is the quantity that only possess magnitude but no direction.

Vector quantity is the quantity that only possess magnitude as well as direction.

Speed is defined as the displacement of an object per unit time and is a scalar quantity as it does not involve any direction.

Velocity is defined as the distance moved by an object per unit time and is a vector quantity as it deals with magnitude as well as direction.

4vir4ik [10]4 years ago

3 0

Hello!

To calculate the speed(velocity) of a moving object, we can divide the displacement by the time interval in which the displacement occurred.

This is based off the formula:
v=d/t

Where v=velocity, d=total displacement, t=Time interval

Hope this helps. Any question please just ask. Thank you kindly.

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6 0

3 years ago

A wire with a length of 150 m and a radius of 0.15 mm carries a current with a uniform current density of 2.8 x 10^7A/m^2. The c

Mrac [35]

Answer:

The current is 2.0 A.

(A) is correct option.

Explanation:

Given that,

Length = 150 m

Radius = 0.15 mm

Current density $J=2.8\times10^{7}\ A/m^2$

We need to calculate the current

Using formula of current density

$J = \dfrac{I}{A}$

$I=J\timesA$

Where, J = current density

A = area

I = current

Put the value into the formula

$I=2.8\times10^{7}\times\pi\times(0.15\times10^{-3})^2$

$I=1.97=2.0\ A$

Hence, The current is 2.0 A.

7 0

3 years ago

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3 years ago

Read 2 more answers

A row of seats is parallel to a stage at a distance of 90 m from it. At the center and front of the stage is a diffraction horn

Serggg [28]

Answer:

distance between seats = 2*11.10 = 22.20 m

Explanation:

seats row is parallel to a stage with a distance d = 90 m

doorway width = 0.070 m

speaker frequency = 4.00 * 10^4 Hz

Speed of sound = 343 m/s

tone will be heard at

$sin \theta = \frac{\lambda}{D}$

we know that $v =\lambda d$

$sin\theta = \frac{v}{dD}$

$= \frac{343}{4.00 * 10^4*0.070}$

$sin\theta = 0.1225$

$\theta = 7.036 degree$

$tan\theta =\frac{x}{d}$

[tex]x = d*tan\theta = 90*0.1234 = 11.10 m

distance between seats = 2*11.10 = 22.20 m

7 0

3 years ago

At what height does a 1000-kg mass have a potential energy of 1J relative to the ground? Be sure to show all work to support you

nikdorinn [45]

Potential energy = (mass) x (gravity) x (height)

1 joule = (1,000 kg) x (9.8 m/s²) x (height)

Height = 1 joule / (9,800 newtons)

= 1/9800 meter

= 0.000102 meter

= 0.102 millimeter (rounded)

7 0

3 years ago