Answer:
f = 0.84 m
Explanation:
given,
near point of the distance from eye(d_i) = 0.60 m
distance he can read (d_o)= 0.350 m
focal length of the contact lens = ?
now,
Using lens formula
f = 0.84 m
Hence, The focal length of the contact lens that person needed is equal to
f = 0.84 m
The north and south poles of a magnetic field produced by an electromagnet will switch when the direction of the Current changes.
Answer:
2. 3.1415 m/s
3. 0.63m
4. 0.006 m/s^2
Explanation:
2. v=(2*pi*r))/T, put in values and solve.
3. Circumference=2*pi*radius, radius is 0.1m, plug in and solve.
4. a=(v^2)/r, (don't worry about converting to meters, since units are the same in kilometers, they will cancel out) plug in values and solve.
That's it!
