Answer:
<h2>1/7 kg</h2>
Explanation:
Find the diagram attached for better understanding of the question.
Given the mass of one of the blocks to be 1.0kg and accelerates downward at 3/4g.
g = acceleration due to gravity.
Let the block accelerating downward be M, mass of the other body be 'm' and the acceleration of the body M be 'a'.
M = 1.0 kg and a = 3.4g
According to newton's second law; ![\sum fy = ma_y](https://tex.z-dn.net/?f=%5Csum%20fy%20%3D%20ma_y)
For body of mass m;
T - mg = ma ... (1)
For body of mass M;
Mg - T = Ma ... (2)
Adding equation 1 ad 2;
+Mg -mg = ma + Ma
Ma-Mg = -mg-ma
M(a-g) = -m(a+g)
Substituting M = 1.0 kg and a = 3/4g into the resulting equation;
3/4 g-g = -m(3/4 g+g)
3/4 g-g = -m(7/4 g)
-g/4 = -m(7/4 g)
1/4 = 7m/4
28m = 4
m = 1/7 kg
Therefore the mass of the other box is 1/7 kg
Answer: ![3.5\ km](https://tex.z-dn.net/?f=3.5%5C%20km)
Explanation:
Given
Car starts from the state of rest and acquires a velocity of
in 6 minutes
Final velocity in m/s is ![v=70\approx 19.44\ m/s](https://tex.z-dn.net/?f=v%3D70%5Capprox%2019.44%5C%20m%2Fs)
Using equation of motion
![v=u+at\\\Rightarrow 19.44=0+a(6\times 60)\\\Rightarrow a=0.054\ m/s^2](https://tex.z-dn.net/?f=v%3Du%2Bat%5C%5C%5CRightarrow%2019.44%3D0%2Ba%286%5Ctimes%2060%29%5C%5C%5CRightarrow%20a%3D0.054%5C%20m%2Fs%5E2)
Distance covered in 360 s
![\Rightarrow v^2-u^2=2as\\\Rightarrow 19.44^2-0=2\times 0.054\times s\\\Rightarrow s=3500.64\ m\approx 3.5\ km](https://tex.z-dn.net/?f=%5CRightarrow%20v%5E2-u%5E2%3D2as%5C%5C%5CRightarrow%2019.44%5E2-0%3D2%5Ctimes%200.054%5Ctimes%20s%5C%5C%5CRightarrow%20s%3D3500.64%5C%20m%5Capprox%203.5%5C%20km)
Answer:
The first law of thermodynamics states that the change in internal energy of a system equals the net heat transfer into the system minus the net work done by the system. In equation form, the first law of thermodynamics is ΔU = Q − W.
The internal energy of ideal gas is U = cV The change in internal energy for ideal gas is therefore ∆U = cV ∆T, where cV is specific heat (at constant volume), and ∆T is change in tem- perature.
Explanation:
ihopeithelps
He discovered the basic principles of inheritance and heredity through experiments with pea plants