Answer:
1.152 miles
Explanation:
Given: central angle = 1 minute = 
radius of the earth = 3960 miles
The length of an arc =
2
r
where:
is the central angle, and r is the radius.
Thus,
Distance along the arc =
2
r
Distance along the arc =
x 2 x
x 3960
=
x 24891.4286
= 1.1524
The required distance along an arc is 1.152 miles.
Answer:633.8 KJ
Explanation:
Given
mass of water
Initial temperature
Final temperature 
Specific heat of water
=4190 J/kg-k
heat of vaporization
Heat required for process
=heat to raise water temperature from 20 to 100 +Heat to vapourize water completely
Q=mc
Q=
Q=
Q=
Answer:
983.400345675 hits per second
Explanation:
Radius = 14.2 cm
Record turn rate = 33 rev/min
Bump separation = 0.499 mm
Circumference of the record = 
Number of bumps in the groove = 
The rate which the bumps hit the stylus = 
The rate at which the bumps hit the stylus 983.400345675 hits per second
As per the third law of Newton, the force exerted by the boat over the student is equal in magnitude to the force that the student exerted on the boat.
So, calculate the force on the student using the second law of Newton, Force = mass * acceleration.
Force on the student = 60 kg * 2.0 m/s^2 = 120 N.
=> horizontal force exerted by the student on the boat = 120 N
Answer: option d. 120 N. toward the back of the boat.
Of course it is toward the back because that is where the student jumped from..
Yes, as density is a value which is the same for any substance and does not change due to different volumes or masses of the same substance