False I think
Hope this helped ^^;
The radiation that was emitted is still "visible"
The universe is still expanding
Dark matter could only be crated by an atomic collapse big enough to create or destroy a universe
From 50km/h to 0km/h in 0.5s we need next acceleration:
First we convert km/h in m/s:
50km/h = 50*1000/3600=13.8888 m/s
a = v/t = 13.88888/0.5 = 27.77777 m/s^2
Now we use Newton's law:
F=m*a
F=1700*27.7777 = 47222N
4m/s due north of the store
Explanation:
Given parameters:
Time taken = 45s
Displacement = 180m
Unknown
Velocity = ?
Solution:
Velocity is the displacement of a body per unit time. Velocity is a vector quantity that has both magnitude and direction.
Velocity = =
Velocity = 4m/s due north of the store
Learn more:
Velocity brainly.com/question/10883914
#learnwithBrainly
Answer:
Power = 14.7 W
Explanation:
Given:
Mass of the object to be raised is,
Height to be raised is,
Time taken during the work is,
As the object is raised vertically, the acceleration acting on it is due to gravity and is equal to 9.8 m/s².
Now, work done in moving an object of mass 'm' to a height 'h' is given as:
Now, power is given as the rate of doing work which is given as:
Now, plug in all the values and solve for power. This gives,
Therefore, the power required to raise the object to a height of 3 meters is 14.7 watts.