Answer:
coins made with the combination of copper zinc and Nickel
A cloth is made of fabrics
A towel is made from cotton
an umbrella is made up of fiberglass
a sweater is made up of wool
hope it helps
please mark me as the brainliest
Answer:
a = 580 m/s^2
Explanation:
Given:
- Distance for accelerated throw s_a = 70 cm
- Angle of throw Q = 30 degrees
- Distance traveled by the javelin in horizontal direction x(f) = 75 m
- Initial height of throw y(0) = 0
- Final height of the javelin y(f) = -2 m
Find:
What was the acceleration of the javelin during the throw? Assume that it has a constant acceleration.
Solution:
- Compute initial components of the velocity:
V_x,i = V*cos(30)
V_y,i = V*sin(30)
- Use second equation of motion in horizontal direction:
x(f) = x(0) + V*cos(30)*t
75 = 0 + V*cos(30)*t
t = 75 /V*cos(30)
- Use equation of motion in vertical direction:
y(f) = y(0) + V_y,i*t + 0.5*g*t^2
Subs the values:
-2 = 0 + V*sin(30)*75/V*cos(30) - 4.905*(75/Vcos(30))^2
-2 = 75*tan(30) - 4.905*(5625/V^2*cos^2(30))
V^2 = 4.905*5625 / (2 + 75*tan(30))*cos^2(30)
V^2 = 812.0633
V = 28.5 m/s
- Use the third equation of motion in the interval of the throw:
V^2 = U^2 + 2*a*s_a
28.5^2 = 2*a*0.7
a = 580 m/s^2
Answer:
false here is why :)
Explanation:
Regular, moderate-intensity physical activity reduces the risk of developing coronary heart disease and can reduce the likelihood of dying from heart disease.
hope this helped.
Thermo-Electrochemical converter (UTEC) is a thermodynamic cycle that does not account for the Carnot Efficiency.
The Carnot cycle is a hypothetical cycle that takes no account of entropy generation. It is assumed that the heat source and heat sink have perfect heat transfer. The working fluid also remains in the same phase, as opposed to the Rankine cycle, in which the fluid changes phase. A practical thermodynamic cycle, such as the Rankine cycle, would achieve at most 50% of the Carnot cycle efficiency under similar heat source and heat sink temperatures.
<h3>What is Thermo-Electrochemical converter?</h3>
In a two-cell structure, a thermo-electrochemical converter converts potential energy difference during hydrogen oxidation and reduction to heat energy.
It employs the Ericsson cycle, which is less efficient than the Carnot cycle. In a closed system, it converts heat to electrical energy. There are no external input or output devices.
This means there will be no mechanical work to be done, as well as no exhaust. As a result, Carnot efficiency is not taken into account in this cycle. Carnot efficiency is accounted for by other options such as turbine and engine.
Learn more about Thermo-Electrochemical converter here:
brainly.com/question/13040188
#SPJ4
Answer:
Car B has a mass of 800 kg.
General Formulas and Concepts:
<u>Momentum</u>
Law of Conservation of Momentum: 
Explanation:
<u>Step 1: Define</u>
<em>Identify variables</em>
[Given] m₁ = 1200 kg
[Given] v₁i = 10 m/s
[Solve] m₂
[Given] v₂i = 0 m/s
[Given] vf = 6 m/s
<u>Step 2: Solve for m₂</u>
- Substitute in variables [Law of Conservation of Momentum]: (1200 kg)(10 m/s) + m₂(0 m/s) = (1200 kg + m₂)(6 m/s)
- Multiply: 12000 kg · m/s = (1200 kg + m₂)(6 m/s)
- Isolate m₂ term: 2000 kg = 1200 kg + m₂
- Isolate m₂: 800 kg = m₂
