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Vesnalui [34]
3 years ago
6

A base is a substance that produces hydrogen ions in a water solution

Physics
1 answer:
omeli [17]3 years ago
4 0
False. Bases are substances that dissociate(break down) to give off hydroxide ions in aqueous solutions. The hydroxide ions are what makes them basic.
You might be interested in
Please help he i will name brainliest!!!!!
goldenfox [79]

Answer:

time is second

acceleration is speed

initial velocity is

distance is meters

6 0
3 years ago
A cat is shot horizontally out of a cannon that is on top of a 125 meter tall cliff. If the cat lands 286 m away from the base o
Elden [556K]

The initial velocity of the cat is 56.6 m/s

Explanation:

The motion of the cat is a projectile motion, consisting of:

- a uniform horizontal motion with constant velocity

- a vertical accelerated motion with constant acceleration (free fall)

We start by analyzing the vertical motion, to find the time it takes for the cat to reach the ground. We use the following suvat equation:

s=ut+\frac{1}{2}at^2

where we have (choosing downard as positive direction)

s = 125 m is the vertical displacement of the cat

u = 0 is the initial vertical velocity

t is the time taken to reach the ground

a=g=9.8 m/s^2 is the acceleration of gravity

Solving for t, we find

t=\sqrt{\frac{2s}{a}}=\sqrt{\frac{2(125)}{9.8}}=5.05 s

Now we can analzye the horizontal motion. Since the motion is uniform and the horizontal velocity is constant, it is given by

v_x =\frac{d}{t}

where

d = 286 m is the horizontal distance travelled

t = 5.05 s is the time taken

Solving the equation,

v_x = \frac{286}{5.05}=56.6 m/s

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

3 0
3 years ago
Humans are a part of the Earth system. List at least three examples of how you, in particular, influence one or more of Earth’s
Naily [24]

Answer:

True, The humans have modified their environment the ecological system

Explanation:

  • Human is a part of the earth system and they are included in the ecological system that in particular is concerned with the provision of the feedback mechanism and cyclic flow of the system of energy such as the atmosphere, cryosphere, and the biosphere and the hydrosphere.
  • The human has already and influences the earth's physical system alike that of the atmospheric system in terms of the climate changes and the global warming that is taking place at a massive scale.  
  • They are influencing the soil and land systems in terms of the depletion resources and the disturbing the hydrological cycles on earth that further influence the amounts of rainfall patterns.
  • <u>The three examples</u><u> </u><u>given above are those of the use of the natural resources and thereby depletion of resources which are needed to sustain the functioning of the planet and various fields of the economics and the geology and that of the socio systems are also impacted and these forms the earth's major sphere of life.</u>
8 0
3 years ago
The drift speed in a copper wire is 7.89 ✕ 10−5 m/s for a typical electron current. Calculate the magnitude of the electric fiel
monitta

Answer:

E  = 0.0175 N/C

Explanation:

v = drift speed in a copper wire = 7.89 x 10⁻⁵ m/s

μ = mobility of mobile electrons in copper wire = 4.5 x 10⁻³ (m/s)/(N/C)

E = magnitude of electric field in the wire

Drift speed is given as

v = μ E

Inserting the values

7.89 x 10⁻⁵ = (4.5 x 10⁻³) E

E  = 0.0175 N/C

4 0
3 years ago
Both the electrical force and the gravitational force between two objects share which relationship?
kolbaska11 [484]

They are inversely proportional to the square of the distance.

Explanation:

The magnitude of the gravitational force between two objects is given by

F=G\frac{m_1 m_2}{r^2}

where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between the two objects.

The magnitude of the electrical force between two objects is given by

F=k\frac{q_1 q_2}{r^2}

where k is the Coulomb's constant, q1 and q2 are the charges of the two objects, and r is the distance between the two objects.

In both cases, we see that the magnitude of the force is iinversely proportional to the square of the distance, \frac{1}{r^2}, so the correct option is

They are inversely proportional to the square of the distance.

7 0
3 years ago
Read 2 more answers
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