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Elanso [62]
2 years ago
7

24. A anvil with a mass of 60 kg falls from a height of 9.5 m. How fast is it going right

Physics
1 answer:
shepuryov [24]2 years ago
6 0

So they give us this

V=IR

V= 1.8

I=0.4

R=?

So we insert the thing that we know.

1.8=0.4*R

We need to leave our unknown value alone. So if our value of 0.4 is multiplying the unknown value it passes to the other side dividing.

So we have this.

Lastly we solve.

R=4.5ohms

The formula to find R is V=IR

V/I=R

So the resistance will be the Voltage divided by the Current

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1. An object is projected upward with a velocity of 125 m/s.
grigory [225]

Answer:

A) s = 796.38 m

B) t = 12.742 s

C) T = 25.484 s

Explanation:

A) First of all let's find the time it takes to get to maximum height using Newton's first equation of motion.

v = u + gt

u = 125 m/s

v = 0 m/s

g = 9.81 m/s²

Thus;

0 = 125 - 9.81(t)

g is negative because motion is against gravity. Thus;

9.81t = 125

t = 125/9.81

t = 12.742 s

Max height will be gotten from Newton's 2nd equation of motion;

s = ut + ½gt²

s = (125 × 12.742) + (½ × -9.81 × 12.742²)

s = 1592.75 - 796.37

s = 796.38 m

B) time to reach maximum height is;

t = u/g

t = 125/9.81

t = 12.742 s

C) Total time elapsed is;

T = 2u/g

T = 2 × 125/9.81

T = 25.484 s

4 0
3 years ago
Please help me with my physics! I do not understand and please provide work.
Marrrta [24]
26) A) 400J as GPE = mgh
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5 0
3 years ago
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A circuit has a current of 3.6 A and a resistance of 5.0 Ω. What is the voltage applied to the circuit?
Inessa [10]

The key formula ===> Voltage = (current) x (resistance)

Plug in the numbers given ===> Voltage = (3.6 A) x (5.0 ohms)

Dooda multiplication ===> Voltage = 18 volts

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An oval is around Earth that points toward and away from the moon to show the tidal bulges. The gravitational pull of the sun and moon combined create larger than normal tides. The gravitational pull of the sun reduces the moon's gravitational pull to create moderate tides.

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A 12-V battery maintains an electric potential difference between two parallel metal plates separated by 10 cm. What is the elec
Sauron [17]

Answer:

The electric field between the plates is 120 V/m.

(c) is correct option.

Explanation:

Given that,

Potential difference = 12 volt

Distance = 10 cm = 0.1 m

We need to calculate the electric field between the plates

Using formula of electric field

E = \dfrac{V}{d}

Where, V = potential difference

d = distance between the plates

Put the formula

E =\dfrac{12}{0.1}

E=120\ V/m

Hence, The electric field between the plates is 120 V/m.

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