Answer:
I matched the answers you requested above
The ball moves by uniformly accelerated motion, and its vertical position at time t is described by the following law
where
is the initial height from which the ball starts its motion
is the initial velocity of the ball
is the gravitational acceleration
The time in which the ball reaches the ground is the time t at which the vertical position y(t) becomes zero:
Which means
whose solutions are:
Neglecting the negative solution (since it has no physical meaning), we can say that the ball reaches the ground after 1.10 s.
Answer:
Given:
Temperature, T = 3.13 K
molar mass of molecular hydrogen, m = 2.02 g/mol =
Solution:
To calculate the root mean squarer or rms speed of hydrogen molecule, we use the given formula:
where
R = rydberg's constant = 8.314 J/mol-K
Putting the values in the above formula:
Hello!
A portable DVD player requires six 1.5-volt batteries to operate. If the resistance in the circuit is 7.2 ohms, what is the current?
Data:
We have six 1.5 volt batteries, soon, your tension (V)
V = 1.5 * 6 = 9 Volts
R (resistance) = 7.2 ohms
I (Current intensity) = ? (in Amps)
Solving (Ohm's First Law):
Answer:
The current is 1.25 amps
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The answer is C. Mountains. I hope this helped!