Answer:
834 milli-volts
Explanation:
Data provided in the question:
Current = 139 milliamps = 139 × 10⁻³ A
resistance = 6 ohms
Now,
The relation between the current , resistance and voltage is given as:
Voltage = Current × Resistance
on substituting the respective values, we get
Voltage = 139 × 10⁻³ × 6
or
Voltage = 834 milli-volts
A. is the answer for this question
Answer:
Trish
Explanation:
the work done by each girl in throwing the ball is equal to the kinetic energy acquired by the ball. The ball thrown by Jamie has for sure more kinetic energy than the ball thrown by Trish, since it travels for a longer distance (25 m against 15 m), therefore this means that Jamie did more work than Trish in throwing the ball.
Answer:
a) about 20.4 meters high
b) about 4.08 seconds
Explanation:
Part a)
To find the maximum height the ball reaches under the action of gravity (g = 9.8 m/s^2) use the equation that connects change in velocity over time with acceleration.
In our case, the initial velocity of the ball as it leaves the hands of the person is Vi = 20 m/s, while thw final velocity of the ball as it reaches its maximum height is zero (0) m/s. Therefore we can solve for the time it takes the ball to reach the top:
Now we use this time in the expression for the distance covered (final position Xf minus initial position Xi) under acceleration:
Part b) Now we use the expression for distance covered under acceleration to find the time it takes for the ball to leave the person's hand and come back to it (notice that Xf-Xi in this case will be zero - same final and initial position)
To solve for "t" in this quadratic equation, we can factor it out as shown:
Therefore there are two possible solutions when each of the two factors equals zero:
1) t= 0 (which is not representative of our case) , and
2) the expression in parenthesis is zero:
Hey there!
Here is your answer:
<u><em>The proper answer to this question is a "igneous rock".</em></u>
Reason:
<u><em>Metamorphic rock: Formed by heat and pressure under the Earths crust.</em></u>
<u><em>Sedimentary rock: Formed by deposition in rivers and pressure causes the rocks to compact.</em></u>
<u><em>Igneous rock: The cooling of lava and it crystalizes.</em></u>
<em>Therefore the answer is Igneous rock.</em>
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit