Answer:
a) 919 m
b) 183.8 m
Explanation:
140 calories = 140 * 4186 J/calorie = 586040 J
a)When the hiker climbs a mountain, this energy is converted to potential energy, which has the following formula
where m = 65 kg is the mass, g = 9.81 m/s2 is the gravitational acceleration and h is the height that he climbs
b) If only 20% of food energy goes into mechanical energy, then the actual potential energy is
586040 * 0.2 = 117208
Similarly, the height that he could climbs is
Answer:
1) x rays
Explanation:
Honestly Gamma rays has the Highest frequency, but in your options, gamma rays is not among, so x rays has the highest frequency among your options.
by Manshow
Answer:
900 m
Explanation:
Given that,
A hiker travels 300 m [N], turns around and hikes 550 m[S], and then finds out he has to hike back another 50.0 m [N].
We need to find the total distance travelled by the hiker.
Let north be positive and south be negative direction.
Distance = total path covered
D = 300 + 550 + 50
D = 900 m
So, the required distance is equal to 900 m.
Answer:
I know that the b portion for the bottom is 86 because thats the atomic number of Rn
Explanation:
No, Alec has not.
The force due to gravity is the same on all objects, regardless of shape and size. The acceleration caused by this force is 9.81 m/s². So if there are two identical pieces of paper, both will experience an equal force of gravity.
The difference in the papers' flight paths is due to the greater air resistance that the flat paper experiences. If the same experiment were to be repeated in a vacuum chamber, both of the pieces of paper would fall at the same rate
