Answer & Explanation:
This age may represent the age of the Earth's accretion, of core formation, or of the material from which the Earth formed. This dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.
Answer
Metals
Explanation
Conductors are materials that allow current to flow through them. ost of these conductors are metals. the best conductors are, copper, silver, and gold. Others such as aluminium, zinc among others come after the three mentioned.
Materials such as wood and plastic are called insulators and they can not conduct current.
With this in mind we can conclude that the most common objects we can use to light the bulb are metals.
Answer:
9.23 m/s
Explanation:
Let, the initial velocity be ux.
The horizontal velocity remans the same. So, time required, t = 25/ux
For vertical component, we know,
h = uy*t + (1/2)*g*t^2 [ g is positive because ball is falling downward ]
Putting in the values, we get,
36 = 0*(25/ux) + 1/2 * 9.81 * (25/u)^2
36 = 3065.625/u^2
u^2 = 85.15625
u = 9.23
[ If there's a problem with the solution, please inform me ]
Assuming the initial direction of motion before impact as negative and final direction of motion as positive.
m = mass of the ball being hit = 0.15 kg
v₀ = initial velocity of the ball before the impact = - 36 m/s
v = final velocity of the ball after impact = 45 m/s
t = time of impact = 0.0020 s
F = force Reggie exerted on the ball
Using Impulse-change in momentum equation
F t = m (v - v₀)
F (0.0020) = (0.15) (45 - (- 36))
F = 6075 N