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3 years ago

PLEASE ANSWER ASAP bbb

Physics

1 answer:

bazaltina [42]3 years ago

8 0

Answer:

if one bulb burns out the other bulbs will also turn off because they are connected to each other.

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A 0.150-kg cart that is attached to an ideal spring with a force constant (spring constant) of 3.58 N/m undergoes simple harmoni

SVETLANKA909090 [29]

Answer:

E = 0.01 J

Explanation:

Given that,

The mass of the cart, m = 0.15 kg

The force constant of the spring, k = 3.58 N/m

The amplitude of the oscillations, A = 7.5 cm = 0.075 m

We need to find the total mechanical energy of the system. It can be given by the formula as follows :

$E=\dfrac{1}{2}kA^2$

Put all the values,

$E=\dfrac{1}{2}\times 3.58\times (0.075)^2\\\\=0.01\ J$

So, the value of total mechanical energy is equal to 0.01 J.

3 0

3 years ago

A 500 kg table with 4 legs rests on solid flat ground. I place 3 books on the center of the table with masses of 10 kg, 20 kg an

BARSIC [14]

Answer:

1,373.4 N

Explanation:

The mass of the table acts at the centre in addition to the books since that is the centre of gravity of the table.

Mass of books will be 10kg+20kg+30kg=60 kg

Total mass of table and books will be 500kg+60kg=560 kg

This mass is evenly distributed into the four legs hence 560kg/4 legs=140 kg per leg

Force is product of mass and acceleration due to gravity hence F=gm

Taking g as 9.81 m/s2 then

F=140*9.81=1,373.4 N

Therefore, rhe normal force is equivalent to 1,373.4 N

6 0

3 years ago

Explain why materials such as plastic foam, feathers, and fur are poor conductors of heat.

vampirchik [111]

They are poor conductors because they keep the heat trapped in one spot, while other materials like metal let the heat go through itself.

8 0

3 years ago

2 types of energy transformations that take place in a race car during a race?

vichka [17]

Answer:

Explanation:

Chemical to thermal as fuel is burned

Thermal to kinetic as the hot gasses push on pistons

4 0

3 years ago

An infnitely long metal cylinder rotates about its symmetry axis with an angular velocity omega. The cylinder is charged. The ch

Klio2033 [76]

Answer:

$B = \frac{\mu_0 \rho r^2 \omega}{2}$

Explanation:

Let the position of the point where magnetic field is to be determined is at distance "r" from the axis of cylinder

so here total charge lying in this region is

$q = \rho(\pi r^2 L)$

now magnetic field inside the cylinder is given as

$B = \frac{\mu_0 N i}{L}$

here current is given as

$i = \frac{q\omega}{2\pi}$

$i = \frac{\rho (\pi r^2 L) \omega}{2\pi}$

$i = \frac{\rho r^2 L \omega}{2}$

now magnetic field is given as

$B = \frac{\mu_0 \rho r^2 L \omega}{2L}$

$B = \frac{\mu_0 \rho r^2 \omega}{2}$

5 0

3 years ago