I have no idea my dude sorry
Answer:
The gravitational attraction between the two objects is
Explanation:
According to universal law of gravitation, the gravitational force of attraction acting between two objects will be directly proportional to the product of mass of the objects and inversely proportional to the square of the distance of separation of two objects.
Here G is the gravitational constant, M, m are the masses of the objects given as 6564300 kg and 5640 kg. And r is the distance of separation given as 50 m.
So
So the gravitational attraction of 0.988 mN will be acting between the two objects.
<u>Answer:</u>
Rowboat arrives 0.558 miles to the upstream when it reaches the opposite shore.
<u>Explanation:</u>
Velocity of rowboat = 3.30 mi/h
Angle with north of west = 62.5⁰
Width of river = 0.505 mile.
Velocity of river = 1.25 mi/hr eastward.
Let us take east as positive X -axis and North as positive Y-axis.
So angle of boat with horizontal axis = (90+62.5) = 152.5⁰
Horizontal speed of boat = 3.30*cos 152.5 = -2.93 mi/h
Vertical speed of boat = 3.30*sin 152.5 = 1.52 mi/h
Horizontal speed of river = 1.25 mi/h
Time taken to cross river = Width of river/Vertical speed = 0.505/1.52 = 0.33 hour.
Velocity along upstream of river = -2.93+1.25 = -1.68 mi/hr
So distance moved along upstream = -1.68*0.33 = -0.558 miles ( negative sign means along west direction)
It reaches 0.558 miles to the upstream when it reaches the opposite shore.
Complete Question
A skier leaves a ski jump with a horizontal velocity of 29.4 m/s. The instant before she lands three seconds later, the magnitudes of the horizontal and vertical components of her velocity are: Group of answer choices
A 29.4 m/s; 29.4 m/s.
B 41.6 m/s; 41.6 m/s.
C 29.4 m/s; 41.6 m/s.
D 0; 29.4 m/s.
E 29.4 m/s; 0.
Answer:
Correct option is A
Explanation:
From the question we are told that
The horizontal velocity is
The time taken for the jump is
The velocity along the vertical axis is
substituting values
During the jump the horizontal velocity remains the same as there was a direction change
So the correct option is A
Answer:
The time required by the impulse to travel from foot to brain equals 0.019 seconds
Explanation:
For uniform motion the distance, speed, time are related by the equation
In our case since the person is 1.90 meters tall so the nerve impulse will have to cover a distance of 1.90 meters at a speed of 100 m/s.
Hence the time required for the impulse to travel from foot to the brain can be calculated as