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SpyIntel [72]
3 years ago
7

A(n) 0.155 kg baseball is thrown with a speed of 18.4 m/s. It is hit straight back at the pitcher with a final speed of 18.4 m/s

. What is the magnitude of the impulse delivered to the ball? Answer in units of kg · m/s.
Physics
1 answer:
Ivan3 years ago
6 0

Answer:

5.704kg.m/s toward the pitcher

Explanation:

Impulse (Ft)= change in momentum

Impulse= m(v-u)

m=0.155 kg  ,       v=18.4 m/s  , u=18.4m/s

impulse=0.155[-(18.4) - (18.4)]

        =  0.155(-36.8)

        = -5.704 kg.m/s

the negative means towards the pitcher

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The capacitor can withstand a peak voltage of 590 volts. If the voltage source operates at the resonance frequency, what maximum
kirill115 [55]

Answer:

The maximum voltage is 41.92 V.

Explanation:

Given that,

Peak voltage = 590 volts

Suppose in an L-R-C series circuit, the resistance is 400 ohms, the inductance is 0.380 Henry, and the capacitance is 1.20×10^{-2}\ \mu F.

We need to calculate the resonance frequency

Using formula of frequency

f=\dfrac{1}{2\pi\sqrt{LC}}

Put the value into the formula

f=\dfrac{1}{2\pi\sqrt{0.380\times1.20\times10^{-8}}}

f=2356.88\ Hz

We need to calculate the maximum current

Using formula of current

I=\dfrac{V_{c}}{X_{c}}

I=2\pi\times f\times C\times V_{c}

I=2\pi\times2356.88\times1.20\times10^{-8}\times590

I=0.1048\ A

Impedance of the circuit is

z=\sqrt{R^2+(X_{L}^2-X_{C}^2)}

At resonance frequency X_{L}=X_{C}

Z=R

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Using ohm's law

V=I\times R

V=0.1048\times400

V=41.92\ V

Hence, The maximum voltage is 41.92 V.

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2 years ago
What is newtons 3rd law? pls help!
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Difference between discrete and continuous charge distribution?
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I really need help.
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amm1812
T = ?
v1 = 0mph
v2 = 60mph
a = 8.7mph/s

a =  \frac{v2 - v1}{t}
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