Answer:
Explanation:
For this case we have the initial height given:
above the water
We know that the total time from the initial point and the end point it's
So we can use this kinematic formula in order to find the time to travel from the original height to the surface of the water:
We assume that the initial velocity is 0, the final height since it's at the surface so it would be 0m, the acceleration for this case would be the gravity and negative since it's acting downward, replacing we have this:
And solving for t1 we got:
Now we can find the velocity at the surface of the water like this:
Since we know that the total time from the begin and the end it's 5 s and from the calculation before we know that the time to reach the surface of the water is 1.01 s, then the time between the surface of the water and the final depth of the water is 5-1.01= 3.99 s
And then we can find the depth of the lake (D) using the formula for constant velocity like this:
Most camels can outrun most horses, but the fastest racehorse would probably outrun the fastest camel (it would be a close race). But camels can carry more weight and can move at average speeds of about 12 kilometer per hour for as much as 18 hours.
Grav Force = GMm/r squared. M is earth's mass. m is the probe. r is distance to centre of earth.Given that 600 = GMm/(10,000^2).GMm = 600x(10,000^2) for 10, 000 milesGMm = ? x (20,000^2) for 20, 000 milestherefore600x(10,000^2)=? x (20,000^2)therefore [600x(10,000^2)]/(20,000^2)=? [600x(1x1)]/(2x2)=? [600/4]=? ?=150lb.Same procedure for b and c.Please ask if you want further help.
Answer:
D. To ensure common resources are not overused
Explanation:
- The article of the antarctic treaty VII provides that all the consultative parties have a right to designate the observers and to undertake the inspection as of the protocol 14 of that provides the protection of the environment and to safeguard the ecological system.
- Since 1963, about 9 inspections have been conducted by the teams by visiting the stations, facilities, the vessels, and the protected areas across a wide area of East Antarctica, The most recent Antarctica expedition treaty inspection was done in Dec 2016.
Answer:
L = 2.61 10³ kg m² / s
Explanation:
Let's approximate the drone to a particle the angular momentum is
L = r x p
L = m r v sin θ
in this case v = 9.5 m / s the mass of the drone is m = 11 kg.
The distance can therefore be found using the Pythagorean theorem, but we can see that the relation
r_perpendicular = r sin θ
r_perpendicular = 25 m
as the flight is horizontal this height does not change
L = m v r_perpendicular
let's calculate
L = 11 9.5 25
L = 2.61 10³ kg m² / s