Answer: A.AB
Explanation:
This Velocity vs Time graph shows the acceleration of a body or object, since acceleration is the variation of velocity in time.
As we can see in the attached image, the graph can be divided in four segments:
OA: In this segment the acceleration is changing at a uniform rate. In addition we can see it has a positive slope, hence we are dealing with a positive uniform acceleration.
AB: In this segment the acceleration is changing at a nonuniform rate, since in this part it is not possible to calculate the slope. However if this were uniform, the slope woul be positive. This means the <u>acceleration is nonuniform and positive.</u>
BC: In this segment the acceleration is changing at a nonuniform rate, since in this part it is not possible to calculate the slope. However if this were uniform, the slope woul be negative. This means the acceleration is nonuniform and negative.
CD: In this segment the acceleration is changing at a uniform rate. In addition we can see it has a negative slope, hence we are dealing with a negative uniform acceleration.
From all these segments, the only one that fulfils the nonuniform positive acceleration condition is option A:
Segment AB
As we know that spring force is given as
here we know that
F = 4 N
x = 2 cm = 0.02 m
now from the above equation we will have
so the elastic constant of the spring will be 200 N/m
Answer:
ratio =0.3075 T
Explanation:
The magnetic field B creates a force on a moving charge such that
Now this causes a centripetal acceleration
so
...........(i)
...............(ii)
If accelerating potential V is same and then kinetic energy equals the potential energy difference
put these value in equation (ii)
simplifying we get
for same location r will be same in both case
..............(iii)
..........(iv)
dividing (iv) and (iii) equation we get
so on solving we get
=0.3075 T
7. 1.47 x 10^5mm to kilometers
Answer: 0.147
Shown answer:
8.4.7 kg to pounds
Answer:
Shown answer:
9.138.4oz to grams
Answer: 3923.574
Shown Answer:
10. 65.5km to miles
Answer: 40.69981
Shown answer:
11. 23.6ft to cm
Answer: 719.328
Shown answer:
12. 2.36 x 10^4 s to days
Answer: 0.273148148 days
Shown answer:
13. 13.6 L to U.S. Liquid quarts
Answer:
Shown answer:
show the work
help me and ill help you?
Answer:
Explanation:
Since 100C is the boiling temperature for water, for this problem we don't need to calculate the energy needed to get to the boiling point, just the heat or energy needed to vaporize the water to steam at 100C.
The formula for this is q=m(delta)
q is Joules of heat needed to vaporize the water to steam at 100C
m is mass in grams
Delta is in Joules per gram and can be looked up for water at this temperature. Here, it is approximately 2260J/g. This online lecture should help ease understanding: https://cabrillo.instructure.com/courses/10267/modules/items/256219
Therefore...
q=2.5g (2260J/g)= 5650J = 5.65kJ
I do not do Physics tutoring but am happy to answer questions here.
