The answer to your question is c.
Answer:
$7.95
Explanation:
$5.75 cost per bag ÷ 47 apples = unit cost of $0.1223. thus, each apple cost $ .1223.
.1223 × 65 apples= $7.95
note_rounding apples to .12*65=$7.8
b. Newtonian focus
c. Schmidt-Cassegrain focus
d. Schmidt focus
Answer:
Peer reviews are important because individuals with similar background knowledge are used to review work to detect inaccuracies or deficiencies in the work.
Explanation:
Those individuals with similar educational and work background knowledge can more accurately review work since they have the required knowledge base for the subject.
B) because electromagnetic waves transmit energy without compressing the particles of the medium
C) because electromagnetic waves generate their own particles for compression and use these for movement
D) because electromagnetic waves move in two-dimensional space, the particles of mediums exist in 3-D space
Answer:
B) because electromagnetic waves transmit energy without compressing the particles of the medium
Explanation:
Electromagnetic waves are the combination of electric and magnetic field which will oscillate perpendicular to each other. And the propagation of wave here is perpendicular to both electric and magnetic field.
So here in this type of wave propagation we do not require any medium as this is propagation of electric and magnetic field.
So here no need of compression or rarefaction of medium molecules and hence it do not need any medium to travel
so here correct answer is
B) because electromagnetic waves transmit energy without compressing the particles of the medium
Answer:
2.124 kg of water
Explanation:
height of the falls is about 48 meters.
Mass of water needed is 1kg = 1000g
Power needed is 106 watts.
The amount of energy in 106 watts in one sec is 106 joules.
To calculate the energy of the 1kg falling water = Mgh
Energy = 1000*9.81*48
Energy = 470880 joules.
1 megawatt is = 1000000watts
The kilogram of water needed is 1000000/470880 = 2.124 kg of water