Magnitude of displacement =
Adding the squares gives displacement =
Displacement = ≈ 724.7m
The elements most likely for form more than one type of ion are the
1 answer:
You might be interested in
Answer: 8.8 m
Explanation:
The movement of the baseball to the wall is a example of parabolic motion. While the baseball aproach the wall it is affected by gravity.
In this case, because the Initial Velocity of the ball is a vecotr, it can be defined using its two directionals compounds. One, on the Y-axis and another on the X-axis. This can be related, on how a hypotenuse is the product of two legs of the triangle. Because of this, each one of this, can be know using the following equation:
Vx = Vo * cos(∅)
Vy = Vo * sin(∅)
Where Vo is the initial velocity 27.5 m/s, and ∅ is the angle which is 20.5°. So we calculate:
Vx = 27.5m/s * cos(20.5)
Vx = 27.5m/s * 0.936
Vx = 25.74m/s
Vy = 27.5m/s * sin(20.5)
Vy = 27.5m/s * sin(20.5)
Vy = 9.62m/s
Now the movement is divided on two parts, one under the effect of gravity and another one with a constant velocity.
To know how tall does the baseball hit the wall, we need to know first how much time it takes the ball to reach the wall on the X-axis. The wall is 17.5m away, we velocity on Vx that is constant we can calculate as it follow:
Time (T) = Distance (D) / Velocity (V)
Where Distance is 17.5m and our Velocity is the Vx calculated before.
T = 17.5 m / 25.74m/s
T = 0.68s
This is the time it takes the ball to reach the wall.
Know with the time, we can calculate the how tall it got on that time with the following equation:
Where Vo is the Y-Compound of the Initial Velocity.
a is the aceleration, in this case the Gravity. Which, will be negative because is oposing the movement. Gravity is equal to 9.81
And t is the time it takes the ball to get to the wall.
This is the height that the baseball touch the wall.
The question is incomplete. Here is the complete question.
7) A standard backpack is approximately 30cm x 30cm x 40cm. Suppose you find a hoard of pure gold (density = 19.3 g/cm³) while treasure hunting in the wilderness. How much mass would your backpack hold if you filled it with gold?
8) 50 pounds is equal to 22,700 grams. How many pounds does this backpack full of gold weigh? Would you be able to carry out that backpack filled with gold?
Answer: 7) m = 694,800g
8) It wieghts 1530.4 lbf
Explanation:
7) Volume of the backpack will be
V = 30 x 30 x 40
V = 36000 cm³
According to density of gold, each cm³ corresponds to 19.3g, then:
m = 19.3 * 36000cm³
m = 694800g
If I filled it with gold, the backpack will hold 694800g or 694.8kg.
8) 50 pounds is equal to 22700g. Then:
50 pound = 22700g
W = 694800g
W =
W = 1530.4 lbf
The backpack, in pounds, will weigh 1530.4lbf, which is very heavy to be supported by a human body.