4. A current of 3.00 A flows through a resistor when it is connected to a 12.0 - V battery. What is the resistance of the resistor?*
2.4 ohms
36 ohms
4 ohms
0.3 ohms

V=IR

12= 3 ×RESISTANCE

RESISTANCE=12/3

=4 Ohms

answer is the third option

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft