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3 years ago

PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (77pts)

Physics

1 answer:

tensa zangetsu [6.8K]3 years ago

8 0

Answer:

Ex.

1. When we try cycling when we push the padel cycle starts but if we do not push the padels the cycle will stop on one position........

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Fish are able to acquire the oxygen needed for respiration under water using gills. This is an example of which type of adaptati

stiks02 [169]

Answer:

Structural

Explanation:

Structural adaptations are a change to a organism's body, gills are part of the fish's body which would be why this is a structural adaptation!

Hope this helped! Stay safe have a good day or night!

3 0

3 years ago

Two circular coils are concentric and lie in the same plane. The inner coil contains 170 turns of wire, has a radius of 0.012 m,

GREYUIT [131]

Answer:

The current of the outer coil is $I_o = 3.99 \ A$

Explanation:

From the question we are told that

The number of turns of the inner coil is $N_i = 170 \ turn$

The radius of the inner coil is $R_i = 0.012 \ m$

The current of the inner coil is $I_i = 6.2 \ A$

The number of turns of the outer coil is $N_o = 220 \ turns$

The radius of the outer coil is $R_o = 0.02 0 \ m$

Generally the net magnetic field is mathematically represented as

$B = \frac{N \ mu I }{ 2 * R }$

Now from told that the net magnetic field is common

$\frac{N_i \mu I_i} {2 * R _i} = \frac{N_o \mu I_o} {2 * R _o}$

Here $\mu$ is the permeability of free space

making $I_o$ the subject

$I_o = \frac{ N_i I_i *2 * R _o}{N_o *2 * R _i}$

substituting values

$I_o = \frac{ 170 *6.2 *2 * 0.020}{220 *2 * 0.012}$

$I_o = 3.99 \ A$

5 0

4 years ago

if the roller coaster is 127 meters tall and has 622,300 J of potential energy how much does it weigh/ what is the mass?

Xelga [282]

Answer:

500 kg

Explanation:

using the formula Potential energy (p.e)=mgh where g= acceleration due to gravity whose value is 9.8

so,pe =mgh

622300=m*9.8*127

m=500kg

4 0

3 years ago

A solid box made from a material whose density is rhoS floats with two thirds of its volume submerged in a liquid whose density

jok3333 [9.3K]

Answer:

$\frac{\rho_S}{\rho_L} = \frac{2}{3}$

Explanation:

density of the solid box material = $\rho_s$

density of the liquid material = $\rho_L$

Given that

solid box floats with two thirds of its volume submerged in a liquid

let V be the volume of the box

then,

$V\rho_sg= \frac{2V}{3}\rho_L g$

⇒ $\frac{\rho_S}{\rho_L} = \frac{2}{3}$

so, the ratio of densities of solid and and the liquid is 2/3

7 0

3 years ago

!!!!!URGENT!!!!!!

Vadim26 [7]

Answer:

The specific heat of air is 100 J/kg°C.

Explanation:

mass, m = 5 kg

Temperature change, T' - T = 37 °C - 22 °C = 15°C

heat, H = 7500 J

let the specific heat of air is c.

The formula of heat is

H = m c (T' - T)

7500 = 5 x c x 15

c = 100 J/kg°C

4 0

3 years ago