Answer:
The friction of the moving object is proportional and perpendicular to the normal force
The friction of the moving object is proportional and perpendicular to the normal force. The friction experienced by the object is dependent on the nature of the surface it is in contact with. Friction is independent of the area of contact as long as there is an area of contact.
What is electrical energy
Answer:
Electric is produce by water it is very helpful in our life
Which force causes all objects with mass to attract one another?
A. Compression
B. Electrical force
C. Magnetic force
D. Gravity
A ball is thrown upward.
What is its initial vertical speed? The acceleration of gravity is 9.8 m/s and maximum height is 5.9 m, Neglect air resistance.
Answer in units of m/s.
Answer:
It is 10.75
Explanation:
a crane gradually lifts a car with a mass of 1000kg at constant speed to height of 5cm. Calculate the potential energy of the car at that height.
Answer:
490.5
Explanation:
Formula
U = mgh
= 1000 x 9.81 x 0.05m
= 490.5
Which of the following is an example of an indirect tax?
Answer:Sales tax, value-added tax, excise tax, and customs duties are examples of indirect taxes.
Explanation:
What is a primary source?
A.A textbook that explains a wide range of science topics
B.A technical article written by an experimenter
C.A newspaper article about a recent discovery
D.A summary of research written for an average reader
Answer:
Explanation:
B
A primary source is one that is written by the person who lived through an advenure or is one doing the action and recording it.
In this case, the answer is B.
Most frequently, for a historian, a primary source is something like a diary or a bunch of letter written by someone experiencing something.
It cannot be about someone else's work. Not C or D
A textbook is not the answer either. It is a bulky summary of scientific, or other kind of thought.
NEED HELP RN!!
All scientist use the scientific method 1 point True False
Answer:
True
Explanation:
It is true because scientists must use this method to get a correct and accurate solution.
i just need x isolated
Answer:
[tex]x=\frac{-y+\sqrt{y^2+4rt} }{2r}[/tex]
[tex]x=\frac{-y-\sqrt{y^2+4rt} }{2r}[/tex]
Explanation:
[tex]rx+y=\frac{t}{x}\\\\x(rx+y)=(\frac{t}{x})x\\\\rx^2+yx=t\\\\rx^2+yx-t=t-t\\\\rx^2+yx-t=0[/tex]
Solve using the quadratic formula.
[tex]x=\frac{-y+\sqrt{y^2+4rt} }{2r}[/tex]
[tex]x=\frac{-y-\sqrt{y^2+4rt} }{2r}[/tex]
Answer:
x=-y+[tex]\sqrt{[/tex]y^2+4rt/2r
Explanation:
solve using the quadratic equation
A car has a velocity of 10m/s.it now accelerated to 1m for 0.25min.find d distance travelled
Answer:
the answer is 13.33 m/s²
Choose the correct term to complete each blank.
It is (Harder/easier) to push an empty wheelbarrow than one filled with dirt. Because the dirt-filled wheelbarrow has more (Force/Speed/Mass) than the empty one, it requires more (Force/Inertia/Acceleration) to push at the same speed. A wheelbarrow containing grass clippings will require (More/Less/The Same) force to push at the same speed than a dirt-filled one because the grass clippings have less mass than dirt. Either wheelbarrow will require more force to push it uphill than downhill due to the effect of
(Friction/Inertia)
Explanation:
It is (Harder/easier) to push an empty wheelbarrow than one filled with dirt. Because the dirt-filled wheelbarrow has more (Force/Speed/Mass) than the empty one, it requires more (Force/Inertia/Acceleration) to push at the same speed. A wheelbarrow containing grass clippings will require (More/Less/The Same) force to push at the same speed than a dirt-filled one because the grass clippings have less mass than dirt. Either wheelbarrow will require more force to push it uphill than downhill due to the effect of (Friction/Inertia)
The initial speed of a body is 4.24 m/s. What is its speed after 2.91 s if it accelerates uniformly at -1.76 m/s2
Answer in units of m/s.
PLEASE HELP
Using 1st equation of kinematics
[tex]\\ \sf\longmapsto v=u+at[/tex]
[tex]\\ \sf\longmapsto v=4.24+2.91(-1.76)[/tex]
[tex]\\ \sf\longmapsto v=|4.24-5.12|[/tex]
[tex]\\ \sf\longmapsto v=0.8m/s[/tex]
a constant force acting on a body of mass 4kg changes its velocity from 2m/s to 4m/s in 4s. what is the force?
Answer:
2 Newton
Explanation:
from newton second law
F = ma
as we have the mass equals 4 kg
we need to get the acceleration which will be change in velocity over change in time
a = ∆V/∆t = (4-2)/4 = 0.5
so F = 4 * 0.5 = 2
Answer:2N
Explanation:
Example #4: Mrs. Smith is going on vacation to Greece for
her anniversary and the weather is predicted to be 27 °C.
Mrs. Smith lives in the U.S. Though and doesn't know what
to pack for this weather. Help her determine the
temperature in F so she can pack.
Answer:
The temperature is [tex]$80.6$[/tex] degrees Fahrenheit.
Explanation:
The weather is predicted to be 27 °C.
[tex]c=\frac{5}{9}(F-32)[/tex]
[tex]27=\frac{5}{9}(F-32)[/tex]
[tex]$5(F-32)=243$[/tex]
[tex]$F-32=\frac{243}{5}$[/tex]
[tex]$F-32+32=\frac{243}{5}+32$[/tex]
[tex]$F=\frac{403}{5}$[/tex]
[tex]F=80.6[/tex]
The temperature is [tex]$80.6$[/tex] degrees Fahrenheit.
Learn more about Fahrenheit, refer :
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If ball A rolls off a 50 cm high table at the same instant that ball B rolls off a 75 cm high table, which will hit the ground first?
ball a
Explanation,
Hope it helps
1. A car travels a distance of 200 m in 4 seconds. What is the velocity of the car?
Answer:
50m/s
Explanation:
here;
distance travelled(s): 200m
time taken(t): 4s
now
velocity(v): s/t
= 200/4
Velocity: 50m/s#
) A jeep starts from the state of rest. If its velocity becomes 60 km/hr in 5 minutes, (i) What is the acceleration of the jeep? (ii) What is the distance covered by the jeep? (Ans: 0.056 m/s", 2500 m)
Answer:
Ans: a=0.056ms^-2 S=2500m
Explanation:
vi=0ms^-1
vf=60km/hr= [tex]\frac{60*1000}{3600}[/tex]=16.6ms-1
a=[tex]\frac{vf-vi}{t}[/tex]
=[tex]\frac{16.6-o}{5*60}[/tex]
a=0.056ms^-2S=?S=vit+[tex]\frac{1}{2}[/tex][tex]at^{2}[/tex]
S=0+[tex]\frac{1}{2}[/tex]*0.056*[tex](300)^{2}[/tex]
S=2500mCan you answer this math homework? Please!
The Answers are in attachment.
When is the car exceeding a 10 km/hr speed limit?
If the car travels a distance greater than 10 km in one hour or less than one hour, it has exceeded the speed limit.
The given parameter:
speed limit = 10 km/hour
To find:
when the car will exceed the speed limitSpeed is defined as the total distance traveled divided by the total time taken for the journey.
[tex]speed = \frac{distance}{time}[/tex]
If the car travels any distance greater than 10 km in 1 hour or less than 1 hour, it has exceeded the speed limit of 10 km/hr.
For example, let's say the distance traveled by the car in one hour is 11 km. The speed of the car is 11 km/hr which is greater than the speed limit.
Thus, we can conclude that if the car travels a distance greater than 10 km in one hour or less than one hour, it has exceeded the speed limit.
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Some expressways are curved, banked and designed to maximize ___________ at higher speeds.
Acceleration
Safety
Traffic
Conflict
Answer:
Safety
Explanation:
Expressways are banked to resist centifugal action
It takes Stu, a slimy slug, 20 minutes to travel from his favorite bush to the local trash can (a trip of 30 meters), how far can he travel in 1 hour (60 minutes)?
Answer:
It take him 1 hour to travel 90 meters
Explanation:
Answer:
90 m
Explanation:
30 ÷ 20 = 1.5 m/min x 60 min = 90 m
A toy car is moved 8m, right, then 1.5m, right, and finally 3.0m, left. If it took 5.0 seconds total for the car to travel its 3 routes, then what is the average speed of the toy car?
Answer:
2.7
Explanation:
V=s÷t
v=13.5÷5.0
V=2.7
Light travels at a speed if 186,000 miles per second. A light-year is the distance that light travels in one year. What is the distance of a light year (in miles)?
Answer:
5,865,696,000,000 miles
Explanation:
one year = 31536000 second
31536000 × 186000 = 5,865,696,000,000
If a line has a slope of 2 and a
rise of 12 what was the run
PLS FAST WILL GIVE BRAINLIEST Describe why atoms can be neutral when they contain charged subatomic particles.
Answer:
Atoms are neutral if they have the same number of charged protons and electrons, balancing positive and negative charges. As long as the numbers of electron and protons are the same, the charges will balance.
derivation of s= u+ 1/2 at2
We know that
Velocity is given by the rate of change of position w.r.t time
[tex]\\ \sf\longmapsto v=\dfrac{dx}{dt}[/tex]
[tex]\\ \sf\longmapsto vdt=dx[/tex]
Now we can see in above v is not independent of t .So we replace the value of v by v=u+at and we get[tex]\\ \sf\longmapsto (u+at)dt=dx[/tex]
Integrate with limits 0 to t and x_o to x respectively .[tex]\\ \sf\longmapsto u{\displaystyle{\int}_0^t}dt+a{\displaystyle{\int}_0^t}dt={\displaystyle{\int}^x_{x_0}}dx[/tex]
[tex]\\ \sf\longmapsto ut+\dfrac{1}{2}at^2=(x-x_0)[/tex]
[tex]\\ \sf\longmapsto x=x_0+ut+\dfrac{1}{2}at^2[/tex]
Suppose your friend mistakes a yardstick for a meter stick and measures the length of an intersection in your neighborhood. Is this error random or systematic? Which of these types of errors affect precision or accuracy?
How do you find the uncertainty of a meter stick?
Thus, L =5 . 7 cm measured with a meter stick implies an uncertainty of 0.05 cm. A common rule of thumb is to take one-half the unit of the last decimal place in a measurement to obtain the uncertainty
The speed of an object undergoing constant acceleration increases from 8.0 meters per second to 16.0 meters per second in 10. seconds. How far does the object travel during the 10. seconds?
Answer:
[tex] \boxed{d = 120\: meters} [/tex]
Explanation:
Given:
[tex] v_{0} [/tex] = 8.0 m/s[tex] v [/tex] = 16.0 m/s[tex] t [/tex] = 10 seconds[tex] d [/tex] = ?We can use this equation with the variables given to solve:
[tex] d \: = \frac{t \: (v + v_{0})}{2}[/tex] →
[tex] d \: = \frac{(10s) \: ((16.0 \: m/s) + (8.0 \: m/s))}{2} [/tex] →
[tex] d \: = \frac{(10s) \: (24 \: m/s)}{2} [/tex] →
[tex] d \: = \frac{(10 \: s \: • \: 24 \: m/s)}{2} [/tex] →
[tex] d \: = \frac{240 \: m}{2} [/tex] →
[tex] d \: = 120 \: m [/tex]
The distance traveled by the object in 10 seconds is 120 meters.
Given to us,
Final velocity of the object, [tex]v= 16\ meter/sec[/tex]
Initial velocity of the object, [tex]u= 8\ meter/sec[/tex]
Time for traveling, [tex]t= 10\ sec[/tex]
Using the first equation of motion, we can find out acceleration of the object [tex]a[/tex],
[tex]v=u+at\\16=8+a\times 10\\a= 0.8\ meter/sec^2[/tex]
Now using the second equation of motion and putting the value of [tex]a[/tex],
The distance[tex](S)[/tex] traveled by the object ,
[tex]\begin{aligned}S&= ut+\frac{1}{2}at^2\\&= 8\times 10+ \frac{1}{2}\times 0.8\times 10^2\\&= 120\ meters \\\end{aligned}[/tex]
Hence,The distance traveled by the object in 10 seconds is 120 meters.
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7. MANSON'S FAVORITE SINGING GROUP WAS...
O THE TEMPTATIONS
O THE BEACH BOYS
O THE ROLLING STONES
O THE BEATLES
In physics, what is the positive and negative sign used for when applied to velocity and acceleration?
Answer:
Opposite direction
Explanation:
For example: The first object travels in the direction pointing to east, while the other one travels pointing to the west.
The first object will have a positive value while the second one will have a negative, cause it's going to the opposite direction
xy+4z=
X=2
Y=2
Z=3
Solve for
Answer:
x×y=2×2=4. 4×z=4×3=12. 4+12=16
