What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s2?A. 23 kg
B. 120 N
C. 23 N
D. 1.875 kg
Answers
What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8m/s²
As Force=Mass X Acceleration
Here F= 15 Kg and Accelerate = 8m/sq sec
So force required = 15×8 = 120N
F = 15 kg * 8 m/s²
F = 120 N
Answer B
hope this helps
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A hair dryer uses 72,000 joules of energy in 60 seconds. What is the power of this hair dryer?
The voltage, V (in volts), across a circuit is given by Ohm's law: V=IR, where I is the current (in amps) flowing through the circuit and R is the resistance (in ohms). If we place two circuits, with resistance R1 and R2, in parallel, then their combined resistance, R, is given by 1R=1R1+1R2. Suppose the current is 3 amps and increasing at 0.02 amps/sec and R1 is 4 ohms and increasing at 0.4 ohms/sec, while R2 is 3 ohms and decreasing at 0.2 ohms/sec. Calculate the rate at which the voltage is changing.
Explain the difference between mass and weight for objects on earth and on the mooon
Answers
The gravitational force of two objects, by definition, is given by:
Where,
G: gravitational constant
m1: mass of object number 1.
m2: mass of object number 2.
d: distance between both objects.
Therefore, according to the given equation, a change that always results in an increase in gravitational force is:
Increase in the mass of the objects and decrease in the distance between them.
Answer:
A change that will always result in an increase in the gravitational force between two objects is:
Increase in the mass of the objects and decrease in the distance between them.
Answers
(voltage)² / (resistance) .
You can see that resistance is in the denominator of the fraction,
so larger resistances dissipate less power, and smaller resistances
dissipate more power.
Here's an easy way to remember it:
-- Connecting a piece of rubber (high resistance) across the terminals of a battery
uses very little power from the battery.
-- Laying a piece of wire (low resistance) across the terminals of a battery
may draw so much power from the battery that the wire melts.
Since the voltage across both bulbs is expected to be the same, the bulb
designed to dissipate 60 watts has higher resistance than the one designed
to dissipate 100 watts.
Answers
Use Newton's second law of motion:
Force = (mass) x (acceleration) .
Take that formula, write ' 65 kg ' in place of 'mass', and
write ' 0.3 m/s² ' in place of 'acceleration', and solve it
for Force.
I know absolutely positively that you can take over and finish it
now, because only an hour ago, you thanked me for solving the
exact same problem for somebody else, and the entire solution
was right there, WITH the answer !
Answers
Answer
The force on the left across the lab table.
Explanation
The Newton's third law of motion states that; action and reaction are equal but a ct in opposite direction.
When the block of is pulled on the right with a force of X Newtons then there is a force -X Newtons applying and equal force on the left. For every action there must be a reaction with is equal and applying in the opposite direction.
So, if the block is pulled on the right by a force of 8 N there is another equal force applying on the left.
Answers
The best description of a grizzly bear’s habitat is:
- D. the physical area where the bear lives
A habitat is the natural surrounding or place where an organism lives, grows and competes with other organisms for resources. It is a physical area.
There are three major types of habitat which includes:
- Freshwater habitat: This refers to the area of water where animals live. Examples of animals that live in a freshwater habitat includes: sea turtle, fishes, etc. Examples of freshwater habitat include:
- Rivers
- Lakes
- Pond, etc
- Marine water habitat: This is where a group of organisms live. Examples include:
- Oceans
- Seas, etc.
- Coastal habitat: This is an intersection between the land and sea habitats.
A grizzly bear is a subspecies of brown bear and is resident in the northern plains of America and their habitat is a physical location where they live.
Therefore, the correct answer is option D
Read more here:
Answer:
I found this question elsewhere on brainly and the answer was verified. Here it is!
Explanation:
Grizzly bear habitats is the habitat or the physical space where the bear lives. Grizzly bears can be found in many different habitats from dense forests to subalpine meadows, arctic tundra and open plains. We can also conclude that all of the bears live in grizzly bear's habitat in order to survive.
Answers
Answer:
Distance traveled will be
Explanation:
We have given speed of the light
We have to find the distance traveled by light in 1 year
We know that 1 year = 8760 hour
And 1 hour = 60×60 = 3600 sec
So 1 year
We know that distance = speed × time
So distance traveled by light in one year
We have to fond the distance in km
As we know that 1 km = 1000 m
So
Final answer:
Radio messages will travel approximately 9.46 x 10^12 kilometers in exactly one year.
Explanation:
Radio waves travel at the speed of light which is approximately 3.00 x 108 m/s.
To find out how many kilometers radio messages will travel in exactly one year, we need to first convert the speed of light into kilometers per second.
Since there are 1000 meters in a kilometer, we divide the speed of light by 1000 to convert from meters to kilometers. Then, we multiply this value by the number of seconds in a year (365 days x 24 hours x 60 minutes x 60 seconds) to get the total distance traveled in kilometers.
In summary, radio messages will travel approximately 9.46 x 1012 kilometers in exactly one year.
Learn more about Speed of light here:
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