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3 years ago

How does a battery supply electrical energy to a circuit?

Physics

2 answers:

Leviafan [203]3 years ago

8 0

Answer: A.

Explanation:

took the test just now

Nesterboy [21]3 years ago

6 0

I think answer should be d. Please give me brainlest I hope this helps let me know if it’s correct or not okay thanks bye

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A batch of 2-cm-thick stainless-steel plates (k = 21 W/m·K, r = 8000 kg/m3, and cp = 570 J/kg·K) are conveyed through a furnace

Vinvika [58]

Answer:

Explanation:

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3 years ago

A pendulum oscillates 40 times in 4 seconds. Find it's time period and frequency.

Elanso [62]

$\Large\sf\underline\blue{Question\:given:}$

A pendulum oscillates 40 times in 4 seconds. Find it's time period and frequency.

$\Large\sf\underline\pink{To~ find:-}$

The time period
Its Frequency

$\Large\sf\underline\red{Solution ~1}$

Frequency of oscillation is defined as the number of oscillation of a vibrating body per second.It is given by

$\sf{Frequency=} \\ \dfrac{Number ~of~ oscillation}{Time}$

$=\dfrac{40}{4}$

$\sf{=10 Hz}$

$\Large\sf\underline\green{Solution ~2}$

The time period

The time required to complete one oscillation is known as Time period.

It is given by the inverse of the frequency.

$\sf{Time~Period=} \\ \dfrac{1}{Frequency ~of~ oscillation}$

${=}\dfrac{1}{10}$

$\sf{=0.1 s}$

________________

Therefore the frequency is $\sf{=10 Hz}$

And the time period is $\sf{=0.1 s}$

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3 years ago

Buna!! ne pune le fizica intrebari despre legarea mixta!! Va rog , ma puteti ajuta ?? Ptr raspunsuri bune dau coroana!!!!!!

Iteru [2.4K]

<span>Un solid covalent de rețea constă din atomi reținuți împreună de o rețea de legături covalente (perechi de electroni împărțite între atomi de electronegativitate similară) și, prin urmare, pot fi considerați o singură moleculă mare. </span>

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3 years ago

A car is being driven along a country road on a dark and rainy night at a speed of 20 m/s. The section of road is horizontal and

erastovalidia [21]

Answer:

Car collides.

Explanation:

The (negative) acceleration experimented by the car will be given by Newton's 2nd Law $a=\frac{f}{m}$ , where f is the friction force, which is the only force acting on the car on the horizontal direction. Its value is given by the formula $f=\mu N=\mu mg$ since the normal force and the weight of the car are balanced on the vertical direction. All this gives us the equation $a=\mu g$

To calculate the distance traveled by the car, we will use the equation for accelerated motion $v_f^2=v_i^2+2ad$ on the form (since it comes to a rest $v_f=0m/s$ ):

$d=\frac{-v_i^2}{2a}=\frac{-v_i^2}{2\mu g}$

Which for our values is (taking the direction of movement as positive, which makes <em>a </em>negative, so we add a -1 to account for this):

$d=\frac{-(20m/s)^2}{2(-1)(0.8)(9.8m/s^2)}=25.5m$

Which means the car crashes against the tree.

3 0

3 years ago

HELPPPPP ASAPPP!!!!!!!

bezimeni [28]

Answer:

The tension T in each of the cables, T = 98 N

Explanation:

Given,

The mass of the loudspeaker, m = 20.0 Kg

The suspended distance of the loudspeaker, d = 2.20 m

The length of each cable, l = 2.9 m

The tension experienced by the cable is given by the formula,

T = mg + ma newton

Where,

g - acceleration due to gravity

a-acceleration produced by the stretched cable

Since the stretched cable and loudspeaker is not moving, then the tension force acting on the cable is equal to the force of gravity.

T = mg newton

Substituting the values in the above equation

T = 20

= 20.0 Kg x 9.8 m/s²

= 196 N

This force is equally supported by the two cables, then the tension in each cable is

T = 196 N / 2

= 98 N

Hence, the tension T in each of the cables, T = 98 N

4 0

4 years ago