Answer: 60 mph
Explanation:
Given
Truck takes 
to make 
trip
The average speed is the ratio of total distance traveled to the total time taken.
Answer:
Explanation:
Potential energy at the surface
= -GMm / R
= -6.6 x 10⁻¹¹ x 6 x 10²³ m / 3400 x 10³
= -1.1647 x 10⁷ m
If v be required velocity
Total energy at surface
= 1/2 m v² -1.1647 x 10⁷ m
= energy at farr off = 1/2 m x 3000²
1/2 m v² - -1.1647 x 10⁷ m = 1/2 m x 9 x 10⁶
1/2 v²= 1.1647 x 10⁷ + .45 x 10⁷
= 1.6147 x 10⁷
v² = 2.3303 x 10⁷
v = 4.827 x 10³ m / s
b ) For final speed zero at infinity
1/2 m v² - -1.1647 x 10⁷ m = 0
1/2 v² = 1.1647 x 10⁷
v² = 2.3294 x 10⁷
v = 4.826 x 10³ m /s
Yes, this statement is true. Majority of the fluids in our body is water. So, when we perspire, it comes out as a salt solution. When the water vaporizes and turns into water vapor, it leaves white residues in our garments after a while. The salt can't be vaporized as fast as the water so it is left as a solid.
"Ionization energy" is the one among the following choices given in the question that <span>decreases with increasing atomic number in Group 2A. The correct option among all the options that are given in the question is the third option or option "C". I hope that the answer has helped you.</span>
