Answer:
Economics is the study of how societies use scarce resources to produce valuable commodities and distribute them among different people.
Explanation:
The ultimate goal of economic science is to improve the living conditions of people in their everyday lives.
Hope this helps!
Answer:
the branch of knowledge concerned with the production, consumption, and transfer of wealth. (basically the study of money and not just banks but how it effects the world)
Explanation:
Help Please I will Give The Brainliest! (SCIENCE)
Answer:
2.Hope this will help you.
Why the same side of the moon is always facing Earth?
A.The time it takes the moon to rotate one time and the time it takes Earth to rotate one time are the same.
B.The time it takes the moon to rotate one time and the time it takes theEarth to orbit the sun one time are the same.
C.The time it takes the moon to rotate one time and the time it takes the moon to orbit Earth one time are the same.
D.The time it takes the moon to orbit Earth one time and the time it takes the Earth to orbit the moon one time are the same.
Answer:
A
Explanation:
the moon rotates exactly once every time it circles the Earth.
The speed of sound through diamond is about 12,000 m/s. The speed of sound through wood is about 3,300 m/s. Which statement explains
why the speed of sound is different through these materials? (1 point)
Answer: They have different rigidities.
Explanation:
A 2-inch, f/4 reflector has a focal length of:
6 inches
8 inches
4 inches
2 inches
Helppp!!!!! Please!!
A 0.144 kg baseball approaches a batter with a speed of 20m/s . The batter lines the ball directly back to the pitcher with a speed of 30m/s . Find the impulse exerted on the ball . If the bat and ball were in contact for 0.012 sec , find the average force exerted on the ball by the bat????
Answer:
Can you help me in mathematics
When you stretch a spring, there is energy in the spring's
potential energy store. What word completes the sentence?
Answer:
field strength i think, I'm not that sure.
What type of force causes the motion of an object to change
Answer:
Ok, so...... Unbalanced forces cause a change in motion, speed, and/or direction. When two forces act in the same direction on an object, the net force is equal to the sum of the two forces. In the example below, the net force would be 900 Newtons (450 + 450 = 900), and the object would move to the right.
Explanation:
Answer:
Unbalanced forces cause a change in motion, speed, and/or direction. When two forces act in the same direction on an object, the net force is equal to the sum of the two forces.
(Cr(NH3).](Co(CN)6) is a coordination complex
compound. What is the percent composition of carbon in this
compound?
Answer:19.51%
Explanation:
Choose the correct words from the box to complete the definition of resistance.
current difficulty ease potential difference
The electrical resistance of a material is a measure of the ______________ of passing a ______________ through it.
Answer:
Opposition of passing a electric circuit
a car is driven off a cliff at 39 m/s. It lands 141 m from the base. How high
above the ground is it when its speed through the air is 45 m/s?
Answer: A
Explanation: STEP BY STEP
A 24 kg object, initially moving at 20 m/s, is slowed by an applied force of 20 N to a final velocity of 16 m/s. How much time did this take?
Answer:
Explanation:
Turtle ba lls
Answer:
4.8 seconds
Explanation:
Ft=change in momentum
Initial momentum=mv=24*20=480 kg*m/s
new momentum=mv=24*16=384 kg*m/s
change in momentum=96 kg*m/s
Ft=change in momentum
20(t)=96
t=4.8 seconds!
What is mass? (Specific simple answer)
Answer:
Mass is the quantity of substance in an object
Science Question: why do astronauts wear organge suits vs white suits
Follow answer please...
Which of the following equations correctly models a balanced single replacement reaction?
Answer:
d
Explanation:
is the answer
What is the acceleration of a 78kg ostrich exerting 438N of applied force running against a wind with 42N of air friction force?
Answer:idek
Explanation: sorry
The Berlin marathon is one of the fastest marathons courses; many world records have been set there. In 2014 Dennis Kimetto ran the 42.195 km in 2 hours, 2 minutes and 5 seconds. what was his average speed?
Answer:
about 2000 klm per min
Explanation:
what is reflection of light ? Which type of surface is required for a regular reflection
Answer:
MIRROR
Explanation:
Answer:
reflection of light is the bouncing back of light rats when it falls on a smooth surface or polish surface.
pls pls pls pls help!!!!!
A 96 kg man is standing in an elevator. The man experiences a net force when the elevator moves at an acceleration of 4.0 m/s2 upward and downward. Find both net forces
Answer:
The net upward force the man experiences is approximately 1,324.8 N
The net downward force the man experienced is approximately 556.8 N
Explanation:
The given mass of the man, m = 96 kg
The acceleration of the elevator, a = 4.0 m/s²
According to Newton's third law of motion which states that action ad reaction are equal and opposite, when the elevator moves upwards, we have;
The net force the man experiences, F = Gravitational force, m·g + The force of the elevator pushing upwards, m·a
∴ ↑F = m·g + m·a
Where;
F = The net force the man experiences
m = The mass of the man = 96 kg
g = The acceleration due to gravity ≈ 9.8 m/s²
a = The acceleration of the elevator = 4 m/s²
∴ ↑F = 96 kg × 9.8 m/s² + 96 kg × 4 m/s² ≈ 1,324.8 N
The net upward force the man experiences ≈ 1,324.8 N
When the elevator moves downwards, we have;
The net force the man experiences, F = Gravitational force, m·g + The loss of the gravitational force as the floor moves further downwards, -(m·a)
∴ F = m·g + -(m·a) = m·g - m·a
F = m·g - m·a
∴ ↓F = 96 kg × 9.8 m/s² - 96 k × 4 m/s² ≈ 556.8 N
The net downward force the man experienced ≈ 556.8 N
PLS HELP!! I will make brainliest!!
Which process is an example of a chemical reaction?
a. an iron nail rusting
b. bath water cooling while you take a bath
c. a piece of metal being heated until it expands
d. a glass window breaking when hit with a baseball
Answer:
Rusting!
Explanation:
Rusting is a chemical reaction because it is the process of oxidation of a metal.
Answer:
rusting
Explanation:
What is the current if a charge of 25 coulombs passes in 5 seconds?
Answer: 5 amps
Explanation: I = Q/t
If the frequency of a wave is 0.25 Hz, what is its period?
A) 0.25 s
B) 2 s
C) 4 s
D) 4 HZ
Answer:
C
Explanation:
frequency = 1 / period
so
frequency = 0.25
0.25 = 1 / period
1 / 0.25 = period
4 s = period
it is not 4 Hz because period is the time taken
so the answer is C
hope this helps ,please mark it
The engine of a 550kg car is producing a net force of 11,000N. What is its acceleration?
Answer:
Yeda
Explanation:
yshyei5rexwu drift hai used thakare I exam rest watu testing reddy
Answer:
20
Explanation:
(correct me if im wrong)
F = m×a
11000 = 550 × a
11000/550 = a
Acceleration =20
What special component would you need to use in a thermostat so that it can respond to changes in temperature
Answer:
A thermistor is an electrical device, a thermally sensitive semiconductor resistor, whose resistance changes in response to temperature. Thermistors are made in a variety of ways including thin films (SiC).
Explanation:
hope it helps
These are the reactant in a chemical equation: 6 CO2 + 6 H2O --> C6H12O6 + 6 O2
Answer:
Carbon Dioxide and Water.
Explanation:
This is the chemical formula for photosynthesis!
Does the earth have mass
Answer:
yes it does
Explanation:
it's not like Balloon it is a solid so it the earth does have a mass
What are the units we measure length or distance in?
I have to type more to ask but I would greatly appreciate it if you guys could answer my question thank you very much
Answer:
U could measure it in area and in operations.
Answer:
meters, millimeters, kilometers, centimeters, inches, feet, yards, miles
A billiard ball rolls from rest down a smooth ramp that is 8.0 m long. the acceleration of the ball is constant at 2.0?
When people place a metal saucepan on the heating element of a stove, heat is transferred from the element to the saucepan by: A reflection.
B convection.
C conduction.
D radiation.
A mass sitting on a horizontal, frictional surface is attached to one end of a spring; the other end is fixed to a wall. 3.0 J of
work is required to compress the spring by 0.20 m. If the mass is released from rest with the spring compressed, it
compresses a maximum acceleration of 15 m/s?.
a) Determine the spring constant.
b) Determine the mass.
d) What is the velocity when the mass reaches maximum acceleration?
c) Deterinine the net force when the mass passes 0.10m compression
d) Determine the acceleration when the mass passes 0.10m compression.
e) Determine the velocity when the mass passes 0.10m compression
Answer:
I started answering this before everything was erases, but briefly
W = 1/2 K x^2 so K = 2 W / x^2 = 6 * 25 = 150
Also F = - K X = 150 * 1/5 = 30 N at max extension
m = F / a = 30 /15 = 2 kg
Since max extension occurs at t = 0 you can write
x = A sin ω t
v = ω A cos ω t
a = -ω^2 A sin ω t note that there is no phase angle here
Also at .1 compression
.1 = .2 sin ω t and sin ω t = 1/2 and ω t = 30 deg = pi / 6
Substiture these values above to get velocity and acceleration when
ω t = 30 deg
Please help
What differentiates one layer of the atmosphere from one another?
Please help
Answer: The stratosphere and the troposphere are defined by the variation in temperature with height. Within a troposphere, the temperature drops as altitude increases, and drops fast enough for convection to occur. Whereas within a stratosphere, the temperature rises with increasing altitude. Features of the atmosphere change with altitude: density decreases, air pressure decreases, temperature changes vary. Different temperature gradients create different layers within the atmosphere. The lowest layer is the troposphere where most of the atmospheric gases and all of the planet's weather are located.
Explanation: