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Mrac [35]
4 years ago
9

A small lead sphere of mass m is hung from a spring of spring constant k. The gravitational potential energy of the system equal

s zero at the equilibrium position of the spring before the weight is attached. The total mechanical energy of the system when the mass is hanging at rest is:
Physics
1 answer:
spayn [35]4 years ago
8 0

Answer:

zero

Explanation:

Energy must be conserved

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What will be the total resistance and current in a parallel circuit with a 15-volt battery and three 10-ohm resistors?
dsp73

Hello!

Recall for resistors in parallel:
\frac{1}{R_t} = \frac{1}{R_1} + \frac{1}{R_2} + ... + \frac{1}{R_n}

We can begin by calculating the total resistance:
\frac{1}{R_t} = \frac{1}{10} +  \frac{1}{10} + \frac{1}{10}}\\\\\frac{1}{R_t} = \frac{3}{10}\\\\R_t = \frac{10}{3} = \boxed{3.333 \Omega}

Now, we can calculate the current using Ohm's Law:
V = iR\\\\i = \frac{V}{R}

V = Voltage of battery (V)
i = Current (A)

R = Resistance (Ω)

Plug in the given voltage and the total resistance we solved for.

i = \frac{15}{3.33} = \boxed{4.5 A}

8 0
2 years ago
Which of the following can refer to the form of exercise that uses free weights, weight machines, resistance bands, or the weigh
kari74 [83]

Answer:

option C...

resistance training is the correct answer

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Mars has a very thin atmosphere, and yet its surface temperatures are higher than would be expected, given its distance from the
djverab [1.8K]

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Water exists on Mars but the atmosphere is too thin for it to last long on the surface in a liquid state. Instead, water on Mars is found below the surface of the polar regions as water-ice and also as seasonal briny water flows down hillsides and crater walls.

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Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, being larger than only Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin atmosphere, and has a crust primarily composed of elements similar to Earth's crust, as well as a core made of iron and nickel. Mars has surface features such as impact craters, valleys, dunes, and polar ice caps. It has two small and irregularly shaped moons: Phobos and Deimos.

To learn more about mars from the given link:

brainly.com/question/22673646

#SPJ4

3 0
1 year ago
displacement vectors of 4 km south, 2 km north, 5 km south, and 5 km north combine to a total displacement of a. 16 km north b.
den301095 [7]
I think the answer is 2 km south. This is because when someone moves 4km south and moves 2km north, the final position 2km south. and if the person moves 5 km farther north,the position is now 3km north and if he moves 5km south, the final position is 2km south.
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