Answer:
On molecules of PH3, there has to be 3 atoms.
Explanation:
The Element Hydrogen (H) has 3 attoms.
The Element Phosphorus (P) has 1 atom.
These two created into the molecule PH3, would have to have only 3 attoms because they are asking how many hydrogens atoms are in the molecule PH3.
Answer:
In the present study, the startle blink reflex is used as a measure of emotion regulation to effective picture stimuli. Based on the aphasic theory of emotion, it is hypothesized that the startle response will be largest in magnitude in the presence of negative emotional stimuli (Varanasi, Spence, & Lang, 1988).
Answer:
1.60 g
Explanation:
From the attached file below:
we can deduce that:
The distance traveled by 2 s will be:
x = vt
x = 20 m/s × 2 s
x = 40 m
The length is quarter of the circle with radius r,
so; if 2 πr = 4 x
Then radius (r) will be:
r = 25.5 m
The centripetal acceleration can be expressed as:
so;
a = 15.7 m/s²
the magnitude of the acceleration experienced by your unfortunate passengers in terms of acceleration due to gravity is then determined by the equation:
∴ The magnitude of the acceleration experienced by your unfortunate passengers during the turn = 1.60 g
Answer:
<h3>10.1m/s</h3>
Explanation:
Using the equation of motion v² = u²+2as where;
v is the final velocity
u is the initial velocity
a is the acceleration due to gravity
s is the height of fall
Given
u = 2.0m/s
s = 5.0m
g = 9.81m/s²
Required
final velocity of the book in m/s
Substitute the given parameters into the formula;
v² = u²+2as
v² = 2²+2(9.81)(5)
v² = 4+98.1
v² = 102.1
v = √102.1
v = 10.1m/s
<em>Hence the final velocity of the book in m/s is 10.1m/s</em>
Answer:
-
Both exceed the matter-energy equivalent of luminous matter
- Dark matter has only an attractive gravitational effect, while the dark energy is repulsive in nature
Explanation:
Dark matter is defined as the matter which consists of about 85% of the total matter of the universe and is no-baryonic in nature.
It is attractive in nature and exerts gravitational pulling effect. Even individual galaxies are under the influence of dark matter. It is way more powerful than the visible matter.
Dark energy is that form of energy which is said to be responsible for the universe's expansion and is repulsive in nature
