Two wires are used to suspend a sign that weighs 500 N. The two wires make an angle of 100° between each other. If each wire is exerting an equal amount of force how much force does each wire exert?
Answers
The force each wire exert will be "390.62 N".
The given values are:
Weight,
- mg = 500 N
Angle,
- θ = 100°
As we know,
The sum of vertical forces = 0
then,
→
Now,
→
By substituting the value, we get
→
→
→
→
Learn more:
Related Questions
Scientific ____ are the best explanations so far to explain a pattern seen in nature.
If a force of 65 N is exerted on a 45 kg sofa and the sofa is moved 6.0 meters, how much work is done in moving the sofa? 17,550 J 171.990 J 390 J none of the above
Give the number of valence electrons for O. A) 0 B) 1 C) 2 D) 3 E) 4
Two cylindrical resistors are made from same material and have the same length. When connected across the same battery, one dissipates twice as much power as the other. How do their diameters compare ?
Answers
Answer:
188.7 m
Explanation:
height of bridge above water (h) = 393 m
mass of bungee jumper (m) = 150 kg
length of cord (L) = 78 m
acceleration due to gravity (g) = 9.8 m/s
initial energy = mgh = 150 x 9.8 x 393 = 577,710 J
since the jumper barely touches the water, the maximum extension of the cord (x) = 393 - 78 = 315 m
from the conservation of energy mgh =
therefore
577,710 =
k = 11.64 N/m
from Hooke's law, force (f) = kx' ⇒ mg = kx'
where x' is the extension of the cord when it comes to rest
150 x 9.8 = 11.64 × x'
x' = 126.3 m
the final height at which the cord comes to a rest = height of the bridge - length of the cord - extension of the cord when it comes to rest
the final height at which the cord comes to a rest = 393 - 78 - 126.3 = 188.7 m
Answers
Answer:
a) 0.4175 seconds
b) 0.854 m
Explanation:
t = Time taken
u = Initial velocity = 40 m/s in x direction
v = Final velocity
s = Displacement = 16.7 m
a = Acceleration due to gravity = 9.81 m/s²
a) Time = Distance / Speed
Time taken by the ball to reach home plate is 0.4175 seconds
b) Here velocity will by taken in y direction will be 0
The ball drops by 0.854 m between the pitcher’s hand and home plate.
Answers
Answer:
(a). The speed of car will increases.
(b). The speed of car will decreases.
Explanation:
Given that,
A car is traveling from your left to your right at a constant velocity.
We need to find two actions could the driver take
Using given data
(a). If the velocity and acceleration of car to the right
It means the velocity and acceleration of car is in same direction then the speed of car will increases.
(b). If the velocity to the right and the acceleration to the left
It means the velocity and acceleration of car is in opposite direction then the speed of car will decreases.
Hence, (a). The speed of car will increases.
(b). The speed of car will decreases.
Answers
regardless of the route that was traveled on the way.
If you're asked to find a displacement, then the first thing the asker has to do
is define the part of the graph that he's interested in.The easiest way to do that
is to specify the start-time and end-time. Once you have those, the displacement
is easy. Just look at the graph. Find the position at the end, and the position
at the beginning. Subtract the beginning position from the ending position, and
that's the displacement.
Ignore everything in between. No matter how many curves, curls, breaks, or
stops the graph may have on the way, you don't care. The displacement is just
the difference between the end position and the start position.
Choose 1 answer:
(Choice A) A kilogram is larger than a pound, so the scale could measure more massive rocks.
(Choice B) Accurate measurements cannot be made in pounds.
(Choice C) Pounds cannot be converted to kilograms.
(Choice D) It is easier to compare measurements when using the same unit system.
Answers
Answer:
(D). It is easier to compare measurements when using the same unit system.
Explanation:
Kilograms are the standard unit of mass in the metric system, while pounds are the standard unit of mass in the imperial system.
The two systems are not directly convertible, so it would be difficult to compare measurements made in different units.
Therefore, the teacher requires that the students make their measurements in kilograms to simplify the comparison of their results.
So, answer (D). It is easier to compare measurements when using the same unit system.
Let's see the other option:
- Choice (A) is incorrect because a kilogram is not larger than a pound. A kilogram is equal to about 2.2 pounds.
- Choice (B) is incorrect because accurate measurements can be made in pounds.
- Choice (C) is incorrect because pounds can be converted to kilograms. The conversion factor is 1 kilogram = 2.2 pounds.
For verified answers and to learn more:
Answer:
Choice D
Explanation:
The correct answer is (Choice D) It is easier to compare measurements when using the same unit system.
When conducting scientific experiments or measurements, it is crucial to maintain uniformity in the units of measurement to facilitate accurate comparisons and analysis. By requiring all students to measure the masses of rocks in kilograms, the teacher ensures consistency and eliminates any potential confusion that may arise from using different unit systems.
Using the same unit system allows for straightforward comparisons and calculations without the need for converting between units. It simplifies data analysis and interpretation, which is crucial for scientific accuracy and understanding. By standardizing the unit of measurement to kilograms, the students can directly compare the masses of rocks and draw meaningful conclusions from their data.
radiant
thermal
chemical
Answers
The correct answer to the question is : C) Thermal energy.
EXPLANATION:
Before coming into any conclusion, first we have to understand thermal energy and conduction.
The thermal energy of a body is the sum total of kinetic energy and potential energy of all of its molecules or atoms.
Whenever a body at high temperature is connected to a body at low temperature, the thermal energy will flow from body at high temperature to a body at low temperature. The part of thermal energy which is transferred due to temperature difference is called heat flow. This process is called conduction where there will be no actual transport of atoms or molecules from one body to another body.
As per the question, Javior touches the hut mug of tea. The mug surface is at high temperature as compared to Javior hand. Hence, heat flow be from mug surface to hand of Javior.
Hence, the correct answer to the question is thermal energy.