All categories

4 years ago

The highest frequency radio waves are which type ?

Physics

1 answer:

Zolol [24]4 years ago

7 0

Answer: Gamma rays

Explanation: Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies.

You might be interested in

An air bubble released by a deep-water diver, 115 m below the surface of a lake, has a volume of 1.60 cm3. The surface of the la

Kryger [21]

Answer:

The value is $V_2 = 1.9396 *10^{-5} \ m^3$

Explanation:

From the question we are told that

The depth at which the bubble is released is $h = 115 \ m$

The volume of the air bubble is $V = 1.60 cm^3 = 1.60 *10^{-6} \ m^3$

Generally from the ideal gas law

$PV = nRT$

Given that n , R , T are constant we have that

$PV = constant$

$P_1 V_1=P_2 V_2$

Here $P_1$ is the pressure of the bubble at the depth where it is released which i mathematically represented as

$P_1 = P_a + P$

Here $P_a$ is the atmospheric pressure with value $P_a = 101325 \ Pa$

and $P$ is the pressure due to the depth which is mathematically represented as

$P = \rho * g * h$

$P = 1000 * 9.8*115$

=> $P = 1127000\ Pa$

Here $\rho$ is the density of pure water with value $\rho = 1000 \ kg/m^3$

$g = 9.8 \ m/s^2$

$V_1$ is the volume of the bubble at the depth where it is released

$P_2$ is the pressure of the bubble at the surface which is equivalent to the atmospheric temperature

$V_2$ is the volume of the bubble at the surface

$V_2 = \frac{ P_1 * V_1}{ P_2}$

=> $V_2 = \frac{(Pa+ P) * V_1}{P_a}$

=> $V_2 = \frac{101325 + 1127000 * (1.60 *10^{-6})}{ 101325 }$

=> $V_2 = 1.9396 *10^{-5} \ m^3$

4 0

3 years ago

At what age is a child likely to learn to sit up without support?

Gemiola [76]

Answer by YourHope:

Hi! ^-^

At what age is a child likely to learn to sit up without support?

I would say Five months if you position the child but Nine months for the baby to sit up by themselves! So the answer is Nine months!

Have a BEAUTIFUL day~

4 0

3 years ago

A 86.3 μC charge has a potential of 17.5 V. Determine how much kinetic energy, in eV, this charge could have.

almond37 [142]

Answer:

9.44 eV

Explanation:

q = Amount of charge = 86.3 μC = 86.3 x 10⁻⁶ C (Since 1 μC = 10⁻⁶ C)

V = Electric potential of the charge = 17.5 Volts

U = Amount of electric potential energy carried by charge

Amount of electric potential energy carried by charge is given as

U = q V

Inserting the values

U = (86.3 x 10⁻⁶) (17.5)

U = 0.00151 J

U = $\frac{0.00151}{1.6\times 10^{-19}}$

U = 9.44 eV

KE = Kinetic energy the charge could have

Using conservation of energy

KE = U

KE = 9.44 eV

5 0

3 years ago

A 1400-kg car traveling east at 25m/s collides with a 1800-kg car traveling at a speed of 20m/s in a direction that makes angle

julia-pushkina [17]

M1*V1 + M2*V2 = M1*V + M2*V.
1400*25 + 1800*20[180+40]=1400*V+1800*V.
Divide both sides by 100:
14*25 + 18*20[220o] = 14V + 18V.
350 + 360[220o] = 32V.
350 - 276-231i = 32V.
74 - 231i = 32V.
242.6[-72.2o] = 32V.
V = 7.6m/s[-72.2o]=7.6m/s[72o] S. of E.

7 0

4 years ago

A tennis ball, 0.314 kg, is accelerated at a rate of 164 m/s2 when hit by a professional tennis player. What force does the play

SVEN [57.7K]

Newton's 2nd law of motion:

Force = (mass) x (acceleration)

   = (0.314 kg) x (164 m/s²)

   = 51.5 newtons

   (about 11.6 pounds) .

Notice that the ball is only accelerating while it's in contact with the racket.
The instant the ball loses contact with the racket, it stops accelerating, and
sails off in a straight line at whatever speed it had when it left the strings.

4 0

4 years ago