Answer:
70 km
Explanation:
Before answering, let's remind the difference between distance and displacement:
- Distance: the total length of the path covered, no matter in which direction
- Displacement: the distance in a straigth line between the final point and the starting point of the motion
In this problem, we are asked to find the total distance travelled. So, we can simply add the length of the two parts of the path, regardless of their direction:
d = 30 km + 40 km = 70 km
Answer:
KE = 
m
Explanation:
In the generation of energy from hydroelectric power station, the motion of water, and the turbines are paramount. The falling flowing water turns the blades of the turbine, which in-turn causes the movement of a coil within a strong magnetic field.
The motion of the coil which cuts the strong magnetic field induces current. Thus, the system generates electrical energy.
The equation that links kinetic energy (KE), mass (m) and speed (v) can be expressed as:
KE = m
Answer:
14.167 m/s
Explanation:
Average speed = Total distance/Total time taken.
Average speed = 170/12 - 0 = 170/12 = 14.167 m/s
Usually, you have to take two years of physical sciences with lab. It doesn't have to be physics, it can be chemistry or biology.
Answer:
D.) independent variable on the x-axis
Explanation:
Normally in an x-y plane, the value of x is taken as an independent variable, i.e. it is independent because it can assume any value (real number), while y depends on the value x. for example for the following equation.
y = x
Where:
x = independent value.
y = dependent value of x
This is the equation of a line, inclined with slope equal to 1.
