Answer:
Explanation:
The equations for the horizontal and vertical position of the ball are, respectivelly:
By isolating each trigonometric component and summing each equation:
The positive real roots are:
The needed angle is:
Answer:
The correct answer should be c)
Explanation:
Sorry if I am incorrect, have a good day y’all
C. Use Coulomb's law F=kq1q2/r^2, where q1 and q2 are the two charges, and r is the distance between the two. Plug in q1=0.0072 C, q2=-0.0060 C, r=0.0040 m, k is the constant 9*10^9 N, F=-2.4*10^10 N, so the answer is C.
There exists the same question that has the following choices.
<span>1 the car's friction is reduced to zero
2 the car's centripetal force drops to zero
3 the car continues in a straight path from the point at which it encountered the ice
4 the car continues in a circular path from the point at which it encountered the ice
</span>
The correct answer is choice 3 <span>the car continues in a straight path from the point at which it encountered the ice</span>
Heat transferred - Work done = Internal Energy
Explanation:
- If there is more heat transfer than the work done, the energy difference is called internal energy
- The first law of thermodynamics equation is given as ΔU=Q−W where, ΔU = Internal energy; Q = Heat transfer; W = Work done
- Heat = transfer of thermal energy between two bodies at different temperatures
- Work = force used to transfer energy between a system and its surroundings
- The First Law of Thermodynamics states - energy can be converted from one form to another with the interaction of heat, work and internal energy
- Energy cannot be created nor destroyed