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3 years ago

How long does it take a ball to fall 5 meters

Physics

2 answers:

Dvinal [7]3 years ago

7 0

Depends on the weight of the ball, Speed= Distance/Time

Elza [17]3 years ago

7 0

Answer:

Depends on balll weight ..and on which speed you throw.

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A 40-mH ideal inductor is connected in series with a 50 Ω resistor through an ideal 15-V DC power supply and an open switch. If

sergey [27]

Answer:i=300 mA

Explanation:

Given

inductance(L)=40 mH

Resistor(R)= $50 \Omega$

Voltage(V)=15 V

Time constant( $\tau$ )= $\frac{L}{R}$

$\tau =\frac{40\times 10^{-3}}{50}=8\times 10^{-4}$

current $i_0=\frac{V}{R}$

$i_0=\frac{15}{50}=0.3 A$

Current as a function of time is given by

$i=i_0\left ( 1-e^{-\frac{t}{\tau }}\right )$

$i=0.3\times 0.9998$

i= 299.95 mA

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4 years ago

In which of these samples do the molecules most likely have the most kinetic energy?

netineya [11]

Answer:

Water vapor at 150 c

Explanation:

I got it right on the test

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4 years ago

An object is in motion if ___

iris [78.8K]

Answer:

it changes position with respect to time

Explanation:

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3 years ago

Read 2 more answers

Assume that block A is accelerating with block B at a rate of 0.800 m/s2 along a frictionless surface. What is the mass of both

zlopas [31]

Answer:

The mass of A and B together is 125kg

Explanation:

To solve this problem, we set up the equations expressing the net force acting on A and B (forces acting to the right are +, those acting to the left are -):

$m_B\cdot a_B=F - F_{fr}\\m_A\cdot a_A = F_{fr}\\a_A = a_B$

The net force acting on B is due to the acting pull force 100N less friction force caused by A. The net force on A is due to the friction force caused by the block B. Since we know both blocks accelerate at the same rate, the system can be solved easily:

$(m_B+m_A)\cdot a_B=F\\(m_B+m_A)\cdot 0.800 \frac{m}{s^2}=100N\implies\\m_B+m_A = \frac{100N}{0.800\frac{m}{s^2}}kg= 125kg$

Of course, alternatively, in this very simple case you could consider A+B a single object being pulled with 100N, and obtain the same results by diving the pull force by the acceleration.

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4 years ago

What matter does not take up the space in the container?

son4ous [18]

Answer:

I think it is solids

Explanation:

gaseous materials take any space in any container they are stored in the same is for liquids.

But solids can not take up the space of a contractor because they have a definite shape .

5 0

3 years ago

How long does it take a ball to fall 5 meters​

How long does it take a ball to fall 5 meters