The focal point of a concave mirror is IN FRONT OF the mirror.
Answer:
45.3°C
Explanation:
Heat gained = mass × specific heat × increase in temperature
q = mC (T − T₀)
Given C = 0.128 J/g/°C, m = 94.0 g, q = 305 J, and T₀ = 20.0°C:
305 J = (94.0 g) (0.128 J/g/°C) (T − 20.0°C)
T = 45.3°C
A! Good luck on your test!
Answer:
A. 65 degrees
Explanation:
The formula to calculate the range of a projectile is:
where
u is the initial speed of the projectile
g is the acceleration of gravity
is the angle of projection of the projectile
We want to find the angle such that it has the same range of a projectile fired at , therefore:
It follows that
And there are two angles that satisfies this condition:
and
In fact, with the second choice,
<span>One of the metals that can use the inner shell before using the outer shell to bond is </span><span>Transition elements
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