A clever octopus swims 8 1/4km at a speedof 0.5 km/h. How long does the octopus
take to swim this distance in hours and
minutes
Answers
Answer:
33 hours or equivalently: 1980 minutes
Explanation:
Use the formula for movement under constant velocity, as the velocity equal the distance traveled divided by the time it took, and solve for the unknown time (t):
which can also be given in minutes as : 33 x 60 = 1980 minutes
Final answer:
The total time taken by the octopus is 16.5 hours to swim 8 1/4 km, which is equivalent to 16 hours and 30 minutes.
Explanation:
Time is a fundamental concept that measures the progression of events and phenomena in the universe. It is a dimension in which events unfold sequentially, from past to present to future. Time is often measured in seconds, minutes, hours, days, and years and is a crucial component of our understanding of the physical world, providing a framework for organizing and comparing the durations of events and processes.
To find the time it takes for the octopus to swim 8 1/4 km, we divide the distance by the speed.
Time = Distance / Speed
= 8 1/4 km / 0.5 km/h = 16.5 hours.
Therefore, the octopus takes 16.5 hours to swim 8 1/4 km.
Since there are 60 minutes in an hour, we can convert the hours to hours and minutes. 16.5 hours is equivalent to 16 hours and 30 minutes.
Learn more about Time taken to swim a distance here:
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Nothing happens to the mirror.
However, if the ray is within some suitable range of
wavelengths, the ray is reflected from the mirror's surface.
B) 3.06 × 107 J
C) 2.46 × 1015 J
D) 6.30 × 1015 J
E) 8.82 × 1015 J
Answers
Answer:
1.1025×10^15Joules
No correct option
Explanation:
The type of energy possessed by the object is kinetic energy. Kinetic energy is the energy due to virtue of an object motion.
KE = 1/2MV² where;
M is the mass of the car = 0.05kg
V is the velocity of the car
Since the car is traveling at 0.7c (c is the speed of light)
speed = 0.7c { 0.7(3×10^8)}
Speed = 2.1×10^8
Substituting this values in the formula given we have;
KE = 1/2×0.05×(2.1×10^8)²
KE = 1.1025×10^15Joules
No correct option.
b. nuclear energy
c. thermal energy
d. mechanical energy
Answers
The type of energy of a spinning turbine is mechanical energy. The answer is letter D. There are two types of modern wind turbines. In a Verical-axis wind turbines (VAWTs), the shaft is mounted on a vertical axis perpendicular to the ground. They are aligned with the wind so there’s no adjustment necessary when the wind direction changes. It can’t start moving on itself that is why it needs a boost from its electrical system to get started. It uses wires for support so the rotor elevation is lower. They are less efficient than HAWTs due to its lower elevation. Lower elevation means slower wind due to ground interferences. The other type is Horizontal-axis wind turbines (HAWTs), the shaft s mounted horizontally parallel to the ground. It is constantly aligned with the wind using a yaw-adjustment mechanism. This mechanism moves the entire rotor left or right in small increments. It uses a tower to lift the turbine components to an optimum elevation for wind speed and take up very little ground space. It is much more efficient than VAWT.
Answer: A ITS A BTW
Explanation:
Answers
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Answers
u=0 m/s
a=g=10 m/s^2
s=2 m