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Agata [3.3K]
3 years ago
10

What is the helmet for

Physics
1 answer:
BabaBlast [244]3 years ago
8 0

Answer:

Explanation:

a helmet is used for our safety this  piece of equipment is used to protect us from getting any injury's on our heads such as concussions getting a cut on your head etc.

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What happens when you boil seawater(no copying)
geniusboy [140]

Answer:

The water turns in to vapor and rises in the air leaving the salt  behind

Explanation:

8 0
3 years ago
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why can we use P=VI in the question electric bulb base generator is rated 220 volts and 100W when it is operated on 110v what wi
MrRissso [65]

Answer:

Correct answer:  P₂ = 25 W

Explanation:

Given: voltage V₁ = 220 V, power P₁ = 100 W, V₂ = 110 V, P₂ = ?

The formula for calculating power is:

P = V · I

We will include in the story and ohm's law:

I = V/R

We will replace the current in the expression for power

P = V · V/R = V²/R  ⇒ R = V²/P

We will first calculate the electrical resistance of the bulb which is a constant in the electrical circuit

R = V₁²/P₁ = 220²/ 100 = 48,400 / 100 = 484 Ω

Power consumption of bulb connected to 110 V is:

P₂ = V₂²/R = 110²/484 = 12,100/484 = 25 W

P₂ = 25 W

God is with you!!!

8 0
3 years ago
Tia needs to produce a solenoid that has an inductance of 2.07 μ H . She constructs the solenoid by uniformly winding 1.19 m of
Masteriza [31]

Answer:

l=0.068 m

Explanation:

given,

inductance of solenoid = 2.07 μ H

winding of the wire = 1.19 m

Using formula of inductance

L = \dfrac{\mu_0N^2A}{l}

L is the inductance

N is number of turns of the coil

μ₀ is permeability of free space

L is length of winding

N (2π r) = 1.19          

squaring both side

4π(N²(πr²))=1.19²    

N² A = 0.113            

now                              

2.07 \times 10^{-6}= \dfrac{4\pi\times 10^{-7}\times 0.113}{l}

l= \dfrac{4\pi\times 10^{-7}\times 0.113}{2.07 \times 10^{-6}}

l=0.068 m

5 0
3 years ago
There are two main types of exercise: (1) exercise, which uses oxygen for energy, and (2) exercise, which does not.
Goryan [66]

Answer:

b

Explanation:

6 0
2 years ago
Read 2 more answers
A spring has a constant k= 10.32 N/m and is hung vertically. A 0.400kg mass is suspended from the spring. What is the displaceme
alukav5142 [94]

Answer:

displacement (x) = 0.003798 meters

Explanation:

from the fact that the string is hung vertically we can deduce that:

Total force acting on the mass = Fs (by spring) + Fg (by gravity)

<em>where</em>

Fs = k*x , x is the displacement..

Fg = m*g

then:

Ftot = m*a, <em>but a = 0 m/(s^2) because the mass becames stationary.</em>

Ftot = 0

Fs + Fg = 0

<em>by direction, take down as negative.</em>

Fs - Fg = 0

k*x = m*g

x = m*g/k = [(0.400)(9.8)]/(10.32)

  = 0.3798 meters

4 0
3 years ago
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