All categories

3 years ago

1. If a rock is dropped from a 600 meter cliff, how long will it take to hit the ground? Dl

Physics

1 answer:

Anuta_ua [19.1K]3 years ago

3 0

Answer:

11.1s

Explanation:

Given parameters:

Height of cliff = 600m

Unknown:

How long it takes to hit the ground = ?

Solution:

To solve this problem, we use one of the kinematics equation;

H = ut + $\frac{1}{2}$ gt²

H is the height

u is the initial velocity = 0m/s

t is the time taken

g is the acceleration due to gravity

600 = $\frac{1}{2}$ x 9.8 x t²

600 = 4.9t²

t² = 122.5

t = 11.1s

You might be interested in

How far can a rocket go?

Lina20 [59]

Answer:

Depends how it is built and what it is made of.

Explanation:

very high

3 0

3 years ago

Read 2 more answers

In a fluid-filled container why is the pressure greater at the base of the container

miss Akunina [59]

I believe because there is much less air and much more water in the bottom

8 0

4 years ago

Read 2 more answers

A 10-turn coil of wire having a diameter of 1.0 cm and a resistance of 0.50 Ω is in a 1.0 mT magnetic field, with the coil orien

n200080 [17]

Answer:

The voltage across the capacitor is 1.57 V.

Explanation:

Given that,

Number of turns = 10

Diameter = 1.0 cm

Resistance = 0.50 Ω

Capacitor = 1.0μ F

Magnetic field = 1.0 mT

We need to calculate the flux

Using formula of flux

$\phi=NBA$

Put the value into the formula

$\phi=10\times1.0\times10^{-3}\times\pi\times(0.5\times10^{-2})^2$

$\phi=7.85\times10^{-7}\ Tm^2$

We need to calculate the induced emf

Using formula of induced emf

$\epsilon=\dfrac{d\phi}{dt}$

Put the value into the formula

$\epsilon=\dfrac{7.85\times10^{-7}}{dt}$

Put the value of emf from ohm's law

$\epsilon =IR$

$IR=\dfrac{7.85\times10^{-7}}{dt}$

$Idt=\dfrac{7.85\times10^{-7}}{R}$

$Idt=\dfrac{7.85\times10^{-7}}{0.50}$

$Idt=0.00000157=1.57\times10^{-6}\ C$

We know that,

$Idt=dq$

$dq=1.57\times10^{-6}\ C$

We need to calculate the voltage across the capacitor

Using formula of charge

$dq=C dV$

$dV=\dfrac{dq}{C}$

Put the value into the formula

$dV=\dfrac{1.57\times10^{-6}}{1.0\times10^{-6}}$

$dV=1.57\ V$

Hence, The voltage across the capacitor is 1.57 V.

5 0

3 years ago

You start at (8, 1). You move right 2 units. Where do you end?

ivann1987 [24]

I'm pretty sure should be shifting your transformation those two units to the right from the original function.

Moving right = subtracting

Moving left = adding

4 0

3 years ago

Which type of volcano has more predictable eruptions?

Ludmilka [50]

Shield volcanos have the most predictable eruptions.

6 0

3 years ago

Read 2 more answers