It would help a lot if you use technology to answer this problem. You can easily input the given data to your scientific calculator. Make sure to put it in CMPLX mode. Then, input the two vectors as shown below:
10∠30° + 10∠105°
The answer would be 6.072+14.659i. This is not yet the final answer. Convert this to the r∠θ form. It would turn to 15.87∠67.5°. That means that the magnitude of the resultant vector is 15.87 and it makes an angle of 67.5° with the positive x-axis.
Answer:velocity=5.8m/s
Explanation:
Mass(m)=30kg
Kinetic energy(ke)=500joule
velocity=√(2ke ➗ m)
Velocity=√(2(500) ➗ 30)
Velocity=√(1000 ➗ 30)
Velocity=√(100/3)
velocity=5.8m/s
Let's break the problem into two parts:
1) In the first part, the wheel starts with an angular speed
and it rotates with an angular acceleration of
for t=1.80 s. So we can find the total angle covered by the wheel in this part of the motion:
2) Now, the circuit breaker trips, so the wheel starts to decelerate with a certain angular acceleration
(which is negative). During this part of the motion, the wheel covered an angle of
.
3) So, we just need to add the angles the wheel covered in the two parts of the motion:
Explanation:
Ohms law states that the electrical current present in a metallic conductor is directly proportional to the potential difference between the metallic conductor and inversely proportional to the resistance therefore if the voltage is increased resistance also increases provided that temperature and other physical properties remains constant V=IR
Answer:
C) It reacts explosively with oxygen.
Explanation:
Physical properties are usually those that can be observed using our senses such as color, luster, freezing point, boiling point, melting point, density, hardness and odor.
What are the Chemical Properties of Hydrogen? They are the characteristics that determine how it will react with other substances or change from one substance to another.