B.) Venus and Uranus
All of the planets move in an eastward direction except Venus and Urunus
Microwaves are transmitted by Radio Waves.
Answer:
the acceleration of the car is -5 m/s².
Explanation:
Given;
initial velocity of the car, u = 50 m/s
time of motion, t = 6 s
final velocity of the car, v = 20 m/s
The acceleration of the car is calculated as;
![a = \frac{v-u}{t} \\\\a = \frac{20-50}{6} \\\\a = - 5 \ m/s^2](https://tex.z-dn.net/?f=a%20%3D%20%5Cfrac%7Bv-u%7D%7Bt%7D%20%5C%5C%5C%5Ca%20%3D%20%5Cfrac%7B20-50%7D%7B6%7D%20%5C%5C%5C%5Ca%20%3D%20-%205%20%5C%20m%2Fs%5E2)
Therefore, the acceleration of the car is -5 m/s².
Answer:
a. Bar A is a magnet
b. Bar B is a metal or magnetic material
c. Bar D is a non-magnetic material
Explanation:
a. Bar A
Since B attracts both A and C, it shows that A and C are both magnetic. So, it is either B and A are magnets or B and C are magnets or A and C are magnets. Also, since A and C sometime attract one another and sometimes repel one another, it means that they attract when their poles are opposite and repel when their poles are negative. This show that both A and C are magnets. Thus, A is a magnet.
b. Bar B
Since B is attracted to both A and C and we know that both A and C are magnets, it implies that B is a magnetic material. Since it does not repel either A or C.
c. Bar D
Since D does not attract A, B or C, D is a non-magnetic material. Since, only a magnetic material can be attracted to magnets and we have established that both A and C are magnets and that B is magnetic. Since D is not also attracted to B, it implies that D is thus non-magnetic.