Answer:
d.) provides proteins for plants
Explanation:
Answer: The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
In general, a scientific law<span> is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a </span>scientific theory<span>. It is a misconception that </span>theories<span> turn into </span>laws<span> with enough research.</span>
a) 
The acceleration due to gravity at a certain location on Earth is given by
where
G is the gravitational constant
M is the Earth's mass
R is the Earth's radius
h is the altitude above the Earth's surface
At the top of Mt. Everest,
R = 6380 km = 
With
(1)
At the Earth's surface,
R = 6380 km =
h = 0
g = ?
So
(2)
By doing the ratio (2)/(1), we find an expression for g in terms of g':
And therefore,
b) 519.3 N
The weight of an object near the Earth's surface is given by
where
m is the mass of the object
g is the acceleration of gravity at the object's location
In this problem,
m = 50 kg is the mass of the object
g' = 9.77 m/s^2 is the acceleration of gravity on top of Mt Everest
Susbtituting,
kinematics allows to find the kinetic variables and the relationships between position, speed and acceleration, for launching projectiles we can find:
a) The horizontal velocity vₓ = 2.1 m/s
b) The height of the table y₀= 0.60 m
given parameters
- Time to reach the floor t = 0.35 s
- Horizontal distance x = 0.75 m
to find
a. Horizontal speed
b. table height
Let's use the kinematics relations, let's start by defining a reference frame with the x-axis along the motion of the ball and the vertical y-axis with the positive direction up.
We look for the initial velocity in the x axis, there is no acceleration we can use the uniform kinematic relations
vₓ = x / t
Where vx is the horizontal velocity, g the acceleration of gravity (g=9.8 m/s²) and t the time
vₓ = 0.75 / 0.35
vₓ = 2.14 m / s
We look for the height of the table that corresponds to the initial height (y₀) of the ball, when reaching the floor the height is zero, on the vertical axis the initial velocity is zero (v_{oy} = 0)
y = y₀ + v_{oy} t - ½ g t²
0 = y₀ + 0 - ½ g t²
y₀ = ½ g t²
y₀ = ½ 9.8 0.35²
y₀i = 0.60 m
- In conclusion with the kinematic relations for the launch of projectiles we can find the horizontal velocity vₓ = 2.1 m / s and the height of the table i = 0.60 m
learn more about projectile launch here:
brainly.com/question/12792922
