The old style (incandescent) light bulb converts more energy
into heat than it does into light. If you're using it mainly as a
source of light, then it's a bummer, and its efficiency is very low.
BUT ... if you're using an incandescent light bulb as a heater, then
its efficiency is much better. It all depends on your point of view.
Answer:
yi = Initial height of the helicopter
yf = final height of the helicopter
vyi = component of the initial vertical velocity of the helicopter
g = gravity constant (9.8m/s^2)
yf = yi + vyideltat - 1/2gt^2
0m = 1000m + (15m/2)deltat - 1/2(9.8m/s^2)t^2
-1000m = (15m/s)t - (-4.9m/s^2)t^2
Use the quadratic formula
4.8t^2 - 15t - 1000 = 0
t1 = 15.75s and t2 = -12.65
t2 is rejected, time can't be negative
Thus, it takes 15.75s before the package strikes the ground.
Answer:
Explanation:
The gravitational force acting on the ball, F = 10 N (down) The air resistance acting on the ball, f = 1 N (up) We need to find the magnitude of net force acting on the ball. The net force is given by : F' = 9 N. So, the net force acting on the ball is 9 N in downward direction. Hence, this is the required solution
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Answer:</h3>
2CO(g) + O₂(g) → 2CO₂(g)
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Explanation:</h3>
What is a balanced chemical equation?
- A balanced chemical equation is one that has equal number of atoms of each element involved in the reaction on both side of the equation.
How do we balance chemical equations?
- Balancing chemical equations is a try and error process that involves putting appropriate coefficients on the reactants and products in a chemical reaction.
Why is it important to balance chemical equation?
- Chemical equations are balanced so as to obey the law of conservation of mass.
In this case; the balanced chemical equation for the reaction between carbon monoxide and oxygen gas is given by;
2CO(g) + O₂(g) → 2CO₂(g)
- This is because there are 2 carbon atoms and 4 oxygen atoms on both the reactant and product side.