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3 years ago

As an object falls

2 answers:

3 0

As an object falls in response to gravitational force, its velocity increases
and its acceleration is unchanged. On Earth, its acceleration is 9.8 m/s².

Gekata [30.6K]3 years ago

3 0

A . both velocity and acceleration increase

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3 years ago

As a car is driven south in a straight line with decreasing speed, fhe acceleration of the car must be

frosja888 [35]

The answer is directed northward. The acceleration will be negative, since the car is decelerating. Thus the power that is slowing it down must be performing in the opposite direction to that which the car is traveling. Or in other words, when speed is lessening, acceleration is in the opposed direction to velocity. The change is CONTRASTING the velocity and so it slows it down.

6 0

3 years ago

At which point is cool air circulating beneath warm air?

stepan [7]

Answer:

Explanation:

5 0

3 years ago

Read 2 more answers

Density is the ratio of an object’s mass to its volume. would you expect density to be a vector or a scalar quantity? explain.

natali 33 [55]

Vectors are quantities described by a number and a direction, thus giving them a line value. these include acceleration, velocity and weight
Scalar quantities only have a magnitude and include things like volume, distance and temperature. Because density uses volume and mass, it is considered a scalar.

4 0

3 years ago

2. Suppose that a parallel-plate capacitor has circular plates with radius R = 30 mm and a plate separation of d = 5.0 mm. Suppo

seropon [69]

Answer:

The maximum value of the induced magnetic field is $2.901\times10^{-13}\ T$ .

Explanation:

Given that,

Radius of plate = 30 mm

Separation = 5.0 mm

Frequency = 60 Hz

Suppose the maximum potential difference is 100 V and r= 130 mm.

We need to calculate the angular frequency

Using formula of angular frequency

$\omega=2\pi f$

Put the value into the formula

$\omega=2\times\pi\times60$

$\omega=376.9\ rad/s$

When r>R, the magnetic field is inversely proportional to the r.

We need to calculate the maximum value of the induced magnetic field that occurs at r = R

Using formula of magnetic filed

$B_{max}=\dfrac{\mu_{0}\epsilon_{0}R^2\timesV_{max}\times\omega}{2rd}$

Where, R = radius of plate

d = plate separation

V = voltage

Put the value into the formula

$B_{max}=\dfrac{4\pi\times10^{-7}\times8.85\times10^{-12}\times(30\times10^{-3})^2\times100\times376.9}{2\times130\times10^{-3}\times5.0\times10^{-3}}$

$B_{max}=2.901\times10^{-13}\ T$

Hence, The maximum value of the induced magnetic field is $2.901\times10^{-13}\ T$ .

7 0

4 years ago