Answer:
Explanation:
Arrangement of all known elements to men based on state of matter reactivity and valence shell structure
Answer:
76 m /s
Explanation:
maximum height, H = 19.7 m
Angle of projection, θ = 15 degree
Let u be the projectile launch speed
Use the formula of maximum height


u = 75.9199 = 76 m /s
Answer:
Explanation:
Given
Temperature of gas 
Volume of gas 
no of moles of gas 
Using Ideal gas Equation to find the Pressure of gas

where P=Absolute Pressure
V=Volume
R=Universal gas constant
T=Temperature



And we know Atmospheric Pressure is 
Therefore Gauge pressure is given by



Explanation:
my guess is A
emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.
Answer:
Solution ( for fourth attachment ) : 38°C
Tip : Remember the units °C when submitting answer
Explanation:
As you mentioned, we only need the solution for the fourth attachment.
The idea here is that the heat lost by the metal will be equal to the heat gained by the water. We know that the specific heat gained or lost will always be represented by the following formula,
q = m
c
Therefore if we substitute the know values and equate the two equations knowing that " q " is common among them --- ( 1 )
0.33
448
Remember that the change in temperature of iron (ΔT) would be represented by final temperature - initial temperature, or final temperature - 693. Similarly the change in temperature of water will be final temperature - 39. Now we can pose the final temperature as a, and solve for a through substitution --- ( 2 )
0.33
448
From here on take a look at the attachment. It represents how to receive get a through simple algebra. Here a, the final temperature, is about 38°C. In exact terms it will be
°C.