2 years ago

Does anyone know what #2 and #3 is

Physics

1 answer:

EleoNora [17]2 years ago

6 0

Answer:

He can figure out if they heat to the same temp with the thermometer.

Explanation:

They have different boiling points and heat up at different rates so they would have different temps at the same time

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Tina drove 3 miles north and 4 miles west to get to her grandmother’s house. Find the distance and displacement.

TEA [102]

Answer:

distance = 3 + 4 = 7 mi

displacement is √(3² + 4²) = 5 mi

Explanation:

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2 years ago

Which two ways dose inertia affect the monitors of the planets

dedylja [7]

Answer:

the inertia provides the tendency to maintain speed and keep moving

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1 year ago

John is hiking and notices a small stream of water flowing down the side of the mountain. What part of the water cycle is John o

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2 years ago

A capacitor with the capacitance constant C has a charge of Q and a potential difference of V.

valina [46]

the new capacitance is 2c

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3 years ago

Suppose that in a lightning flash the potential difference between a cloud and the ground is 0.96×109 V and the quantity of char

Dvinal [7]

(a) $2.98\cdot 10^{10} J$

The change in energy of the transferred charge is given by:

$\Delta U = q \Delta V$

where

q is the charge transferred

$\Delta V$ is the potential difference between the ground and the clouds

Here we have

$q=31 C$

$\Delta V = 0.96\cdot 10^9 V$

So the change in energy is

$\Delta U = (31 C)(0.96\cdot 10^9 V)=2.98\cdot 10^{10} J$

(b) 7921 m/s

If the energy released is used to accelerate the car from rest, than its final kinetic energy would be

$K=\frac{1}{2}mv^2$

where

m = 950 kg is the mass of the car

v is the final speed of the car

Here the energy given to the car is

$K=2.98\cdot 10^{10} J$

Therefore by re-arranging the equation, we find the final speed of the car:

$v=\sqrt{\frac{2K}{m}}=\sqrt{\frac{2(2.98\cdot 10^{10})}{950}}=7921 m/s$

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3 years ago