Answer:
The force is 274 N.
Explanation:
In figure 2:
(d) Let the tension in the string is T.
According to the Newton's second law,
Net force = mass x acceleration
Apply for 200N.
Now put in (1)
T - 114.7 = 20.4 x 7.81
T = 274 N
E=hf C=wavelength*F
E=hC/wavelength
E=(6.626*10^-34)*(3.00*10^8)/670*10^-9
E=(6.626*10^-34)*(3.00*10^8)/450*10^-9
Answer:
initial velocity=2.4m/s
Explanation:
Using the formula:
v=u+at
v= final velocity (6m/s)
u=initial velocity (???)
a=acceleration (0.2 m/s²)
t=time(18 seconds)
v=u+at
6=u+(0.2*18)
6=u+3.6
u=6-3.6
u (initial velocity)=2.4m/s