Answer:
8.1 g/cm³
Explanation:
The following data were obtained from the question:
Mass of cinnabar = 251.1 g
Volume of cinnabar = 31 cm³
Density of cinnabar =?
Density of a substance is simply defined as the mass of the substance per unit volume of the substance. It can be represented mathematically as:
Density = mass / volume
Using the above equation, we can obtain the density of the cinnabar as follow:
Mass of cinnabar = 251.1 g
Volume of cinnabar = 31 cm³
Density of cinnabar =?
Density = mass / volume
Density of cinnabar = 251.1 / 31
Density of cinnabar = 8.1 g/cm³
Thus, the density of the cannabar is 8.1 g/cm³
Solving this using the time, we know that range = horizontal velocity x time of flight
<span>since there are no horizontal forces acting on the ball, there are no horizontal accelerations and the initial horizontal velocity of 36 cos 28 will be constant throughout. I</span><span>f we use the correct time of flight given the launch parameters, we have </span>
<span>range = 36 cos 28 x 3.44 s = 109.3 m </span>
Answer:
180Watts
Explanation:
Power = Force * distance/Time
Given
Force = 500N
Distance = 18m
Time t = 50secs
Substitute into the formula
Power = 500*18/50
Power = 10 * 18
Power = 180Watts
Hence her power output vertically is is 180Watts
There are 35 black holes known in the Andromeda galaxy!
Answer:
V = 6.65 [volt]
Explanation:
We must first find the power generated, power is defined as the amount of energy consumed or generated in a given time.
where:
P = power [w]
E = energy = 40 [J]
t = time = 30 [s]
Now we can calculate the voltage or potential drop by means of the power, the power is calculated by means of the product of the voltage by the current.
where:
V = voltage [volts]
I = current = 200mA = 0.2 [A]