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3 years ago

What is this? Picture

Physics

2 answers:

miss Akunina [59]3 years ago

8 0

Answer:

may be upside down alphabet :"T"

Explanation:

Sladkaya [172]3 years ago

8 0

Looks like a symbol kinda

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Determine the change in thermal energy of 100 g of copper (M = 63,5, Debye 348K) if it is cooled from

Setler [38]

Answer:

given,

mass of copper = 100 g

latent heat of liquid (He) = 2700 J/l

a) change in energy

Q = m Cp (T₂ - T₁)

Q = 0.1 × 376.812 × (300 - 4)

Q = 11153.63 J

He required

Q = m L

11153.63 = m × 2700

m = 4.13 kg

b) Q = m Cp (T₂ - T₁)

Q = 0.1 × 376.812 × (78 - 4)

Q = 2788.41 J

He required

Q = m L

2788.41 = m × 2700

m = 1.033 kg

c) Q = m Cp (T₂ - T₁)

Q = 0.1 × 376.812 × (20 - 4)

Q = 602.90 J

He required

Q = m L

602.9 = m × 2700

m =0.23 kg

8 0

3 years ago

A drone flies 8 m/s due East with respects to the wind. The wind is blowing 6 m/s due North with respects to the ground. What is

Shalnov [3]

Answer:

v=10 m/s

Explanation:

Given that,

Speed of a drone is 8 m/s due East with respects to the wind

Speed of a drone 6 m/s due North with respect to the ground.

We need to find the speed of the drone with respect to the ground. Let v is the speed. It is given by the resultant of two speeds.

$v=\sqrt{8^2+6^2} \\\\v=10\ m/s$

So, the speed of the drone with respect to the ground is 10 m/s.

7 0

3 years ago

Which one of these contains two carbon atoms and six hydrogen atoms

kondor19780726 [428]

The second option
You can see it in the name that see represents carbon and H represents hydrogen on the periodic table. The numbers after it are the amount of items that are in the molecule

7 0

3 years ago

Read 2 more answers

Titania, the largest moon of the planet Uranus, has 1/8 the radius of the earth and 1/1700 the mass of the earth.What is the acc

garri49 [273]

Answer:

(a). The acceleration due to gravity at the surface of Titania is 0.37 m/s².

(b). The average density of Titania is 1656.47 kg/m³

Explanation:

Given that,

Radius of Titania $R_{t}= \dfrac{1}{8}R_{e}$

Mass of Titania $M_{t}= \dfrac{1}{1700}M_{e}$

We need to calculate the acceleration due to gravity at the surface of Titania

Using formula of the acceleration due to gravity on earth

$g_{e}=\dfrac{GM_{e}}{R_{e}^2}$

The acceleration due to gravity on Titania

$g_{t}=\dfrac{GM_{t}}{R_{t}^2}$

Put the value into the formula

$g_{t}=\dfrac{G\times\dfrac{1}{1700}M_{e}}{(\dfrac{1}{8}R_{e})^2}$

$g_{t}=\dfrac{64}{1700}\times G\dfrac{M_{e}}{R_{e}^2}$

$g_{t}=0.004705 g_{e}$

$g_{t}=0.03764\times9.8$

$g_{t}=0.37\ m/s^2$

The acceleration due to gravity at the surface of Titania is 0.37 m/s².

(b). We assume Titania is a sphere

The average density of the earth is 5500 kg/m³.

We need to calculate the average density of Titania

Using formula of density

$\rho=\dfrac{m}{V}$

$\rho_{t}=\dfrac{M_{t}}{\dfrac{4}{3}\pi\times R_{t}^2}$

$\rho_{t}=\dfrac{\dfrac{M_{e}}{1700}}{\dfrac{4}{3}\pi\times(\dfrac{R_{e}}{8})^2}$

$\rho_{t}=\dfrac{512}{1700}\times\rho_{e}$

$\rho_{t}=\dfrac{512}{1700}\times5500$

$\rho_{t}=1656.47\ kg/m^{3}$

The average density of Titania is 1656.47 kg/m³

Hence, (a). The acceleration due to gravity at the surface of Titania is 0.37 m/s².

(b). The average density of Titania is 1656.47 kg/m³

8 0

3 years ago

I've asked this question 5 times and still no answer pls help TT

salantis [7]

Answer:

Explanation:

B. Turn the steering wheel while the car is moving.

causes centripetal acceleration.

C. Press the gas pedal while the car is stopped.

causes forward acceleration.

D. Press the brake pedal while the car is moving.

causes rearward acceleration.

5 0

3 years ago

Read 2 more answers