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padilas [110]
3 years ago
7

Two blocks of aluminum (specific heat c=0.22 cal/g Celsius) with masses of 1000 g and 100 g are at a temperature of 70 c. Which

block has more thermal (internal) energy? Explain why?
Physics
1 answer:
Liula [17]3 years ago
3 0

Internal thermal energy is given as

Q = mCT

so it will depend on the product of mass, specific heat capacity and temperature.

so here we know that both blocks are identical with same initial temperature

So the block with larger mass must have more internal energy

So here the correct answer would be the block with mass 1000g

block with mass 1000 g must have more internal energy

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Wewaii [24]

Answer:

T= 5.18N

Explanation:

u = mass of chord / length of chord

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u = 0.067 kg/m

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v = 7.3 / 0.83 = 8.795m/s

Tension is calculated below using the formula

T = v² * u

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3 years ago
Density of water is 1000 kg/m^3. What will be the volume of 35000 kg water?
d1i1m1o1n [39]
Volume = mass/density
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3 years ago
A high-pass filter consists of a 1.66 μF capacitor in series with a 80.0 Ω resistor. The circuit is driven by an AC source with
Julli [10]

Explanation:

Given that,

Capacitor C=1.66\ \mu F

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(A). We need to calculate the crossover frequency

Using formula of frequency

f_{c}=\dfrac{1}{2\pi R C}

Where, R = resistor

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f_{c}=\dfrac{1}{2\pi\times80.0\times1.66\times10^{-6}}

f_{c}=1198.45\ Hz

(B). We need to calculate the V_{R} when f = \dfrac{1}{2f_{c}}

Using formula of  V_{R}

V_{R}=V_{0}(\dfrac{R}{\sqrt{R^2+(\dfrac{1}{2\pi fC})^2}})

Put the value into the formula

V_{R}=5.10\times(\dfrac{80.0}{\sqrt{(80.0)^2+(\dfrac{1}{2\pi\times\dfrac{1}{2}\times1198.45\times1.66\times10^{-6}})^2}})

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Using formula of  V_{R}

V_{R}=5.10\times(\dfrac{80.0}{\sqrt{(80.0)^2+(\dfrac{1}{2\pi\times1198.45\times1.66\times10^{-6}})^2}})

V_{R}=3.606\ Volt

(D). We need to calculate the V_{R} when f = 2f_{c}

Using formula of  V_{R}

V_{R}=5.10\times(\dfrac{80.0}{\sqrt{(80.0)^2+(\dfrac{1}{2\pi\times2\times1198.45\times1.66\times10^{-6}})^2}})

V_{R}=4.561\ Volt

Hence, This is the required solution.

8 0
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A crate slides down a ramp that makes a 20∘ angle with the ground. to keep the crate from sliding too fast, paige pushes back on
shutvik [7]
The solution is:
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Our f is 64 N and our distance is 20 and -3.6Plugging that in our equation will give us:
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8 0
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which drawing below represents the electric field surrounding two objects that have equal magnitude changes of opposite polarity
Fantom [35]

Answer:

the 3rd one

Explanation:

j cause I think so

8 0
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