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dezoksy [38]
3 years ago
14

(25 hours ) /1 ( minutes) = ( hour )

Chemistry
1 answer:
Finger [1]3 years ago
3 0
60 minutes
thanks again I appreciate you I'm sorry but you ok if I invite to you in my prayers for you and Mani
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A car accelerates from 0 to 72 km/hour in 6.0 seconds. What is the car's acceleration?
MariettaO [177]

Answer: i hope it helps or not

A car increases it's velocity from 0 m/s to 14 m/s in 2 seconds. Amis - Omls ... A racing car's velocity is increased from 44 m/s to 66m/s in 11 seconds. ... 25 km/hr. 1200 km/hr. 2 min. - Kinlarise. 6. A car accelerates from a standstill to 60 km/hr in.

Explanation:

7 0
3 years ago
Read 2 more answers
When rubidium ions are heated to a high temperature, two lines are observed in its line spectrum at wavelengths (a) 7.9 × 10−7 m
svetlana [45]

Answer:

The frequencies of the two lines are:

a) 3.79\times 10^{14} s^{-1}

b)7.14\times 10^{14} s^{-1}

When we heat rubidium compound we will see red color.

Explanation:

\nu=\frac{c}{\lambda }

c = speed of light

\lambda = wavelength of light

a) Frequency of the light when wavelength is equal to 7.9\times 10^{-7} m

\nu=\frac{c}{\lambda }

\nu=\frac{3\times 10^8m/s)}{7.9\times 10^{-7}}

\nu=3.79\times 10^{14} s^{-1}

This frequency corresponds to red light

b) Frequency of the light when wavelength is equal to 4.2\times 10^{-7} m

\nu=\frac{c}{\lambda }

\nu=\frac{3\times 10^8m/s)}{4.2\times 10^{-7}}

\nu=7.14\times 10^{14} s^{-1}

This frequency corresponds to violet light

When we heat rubidium compound we will see red color.

4 0
3 years ago
The mass of an object Is 45 kilograms. It’s weight on earth is—— newtons, and it’s weight on the moon is ——newtons. Gravitationa
Lina20 [59]

Answer:

The weight of the object on earth =441N

Weight of the object on moon = 72N

Explanation:

Weight of a body is the product of its mass and acceleration due to gravity. Acceleration due to gravity varies between planetary bodies. The acceleration due to gravity on earth is 9.8 m/s² while on moon is 1.6m/s² and it goes different for others too.

Weight = Mass * acceleration due to gravity

Weight(e) = weight on earth

Weight (m) = weight on moon

Weight(e) = 45 * 9.8 = 441N

Weight (m) = 45 * 1.6 = 72N

Weight of a body is measured in a unit called Newton(N)

8 0
4 years ago
Find the final equilibrium temperature when 10.0 g of milk at 10. c is added to 1.60 x 10^2g of coffee with a temperature of 90.
IRINA_888 [86]
The concept that can be used in order to answer this item is that of the conservation of heat among the system. We let T be equal to the final temperature. The equation that would allow us to relate the initial and final conditions of both substances is as follows,

     m₁cp₁(T - T₁)  = m₂cp₂(T₂ - T)

The first entity, 1, is the milk and the second entity, 2, is the coffee. We are given that the specific heats of both substances are just equal so we can eliminate them from the equation. Substituting the known values,

   (10 g)(T - 10°) = (1.60 x 10^2 g)(90° - T)

The value of T from the equation is 85.29°C.

Answer: 85.29°C
4 0
3 years ago
What happens during a phase change from a solid to a liquid?
JulijaS [17]

Answer:

The particles of the solid vibrate faster and faster. After a while, they can start to move around

Explanation: Solid particles movement are restricted due to the strong force of attraction between the molecules,Solid phase will only change to liquid phase if the forces of attraction holding the molecules together are broken down by heat, when this happens the solid particles movement will become more mobile as the substance is moving from solid phase and liquid phase

8 0
4 years ago
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