Answer:
speed/time
Explanation:
Answer:
a= (Vf - Vi)
t
To find acceleration (a) you need to subtract the finale velocity (Vf) minus the initial velocity (vi) divided by time (t) as shown in the equation above.
A bird in flight pushes itself upward with
a 7.28 N force. If the bird is climbing at a
constant rate of 1 m/s (no acceleration),
what is the weight of the bird?
[?] N
Answer:
The weight of the bird is equal to 7.28 N.
Explanation:
The upward force acting on the bird = 7.28 N
The bird is climbing at a constant rate of 1 m/s.
We need to find the weight of the bird.
We know that the weight of an object is the force of gravity acting on it. It can be calculated as follows :
W = mg
In this case, 7.28 N of force is acting on the object. Hence, the weight of the bird is equal to 7.28 N.
What is the equation for density? NO LINKS
d = V/m
d= m + V
d= m x V
d= m/V
the M.E = K.E + P.E. If the M.E of the football is 150 J and when it's thrown the K.E is 70 J. What is the P.E of the football?
Answer:
M.E = K.E +P.E
150=70+P.E
P.E=150 –70
P.E=80J
can someone please help me answer this question ?
Answer:
b 60 N force
Explanation:
The change in the momentum is given by the force•distance from the attached point. We don't have any distance, but apparently, the stick forces are being applied in each quarter of the stick, so let's use fractions of 4 to solve it:
150 N:
150•1/4 = 37.5
30 N:
30•2/4 = 30•1/2 = 15
60 N:
60•3/4 = 45
40 N:
40•4/4 = 40•1 = 40
The switch in a circuit breaker opens when which of the following in the circuit becomes too high?
A) current
B) resistance
C) static charge
D) total charge
Answer:
b) resistance
Explanation:
since resistance is responsible for heating, if it increases the circuit breaker opens breaking the flow of current to the circuit and thus preventing short circuits.
A skateboarder rolls off a 2.5 m high bridge into the river. If the skateboarder was originally moving at 7.0 m/s, how much time did the skateboarder spend in the air and how far will be his final position from the bridge?
Answer:
t = 0.714 s and x = 5.0 m
Explanation:
This is a projectile throwing exercise, in this case when the skater leaves the bridge he goes with horizontal speed
vₓ = 7.0 m / s
Let's find the time it takes to get to the river
y = y₀ + v_{oy} t - ½ g t²
the initial vertical speed is zero and when it reaches the river its height is zero
0 = y₀ + 0 - ½ g t²
t = [tex]\sqrt{\frac{2y_o}{g} }[/tex]
t = ra 2 2.5 / 9.8
t = 0.714 s
the distance traveled is
x = vₓ t
x = 7.0 0.714
x = 5.0 m
what is a device that minimizes the force on a microscopic object during a collision?
why does a child look different to both parents?
Answer:
Each parent has a set of genes, and a combination of the genes from the mom and the dad could come together to make the child look totally different.
A child looks different to both parents because children usually look like a "combination" of both their parents. Each parent gives their child their genes. So a child wouldn't look exactly like one parent.
a wire is carrying a 2.45 A current. at what distance from the wire is the magnetic field 1.00x10^-6t
Answer:
0.49m
Explanation:
So you need to change the original equation for finding fields to find distance, and then just plug in the numbers
Which equals 0.49meters
Also it was right on Acellus :)
Hope this helps
help me calculate the kinetic energy (just the middle column) ASAP! SHOW WORK! ON PAPER
Answer:
Explanation:
I can tell you what the answers for the middle column are, but if you don't know how to solve total energy problems, they won't make any sense to you at all.
First row, KE = 0
Second row, KE = 220500 J
Third row, KE = 183750 J
Fourth row, KE = 205800 J
That's also not paying any attention to significant digits because your velocity only had 1 and that's not enough to do the problem justice. I left all the digits in the answer. Round how your teacher tells you to.
What is the temperature difference between 65 degree Celcius and 212 degree Farenheit.
Find the temperature difference in both Celcius and Farenheit scale.
Answer:
65 deg C = 35 deg C below boiling
35 deg C = 35 * 9 deg F / 5 deg c = 63 below boiling deg F
(1 deg C = 9/5 deg F)
212 - 63 = 149
So 65 deg C = 149 deg F
Not sure exactly what's wanted, but
212 deg F = boiling
65 deg C = 149 deg F
Check: 65 * 9/5 + 32 = 149 as found above
Answer:
65 deg C = 35 deg C below boiling
35 deg C = 35 * 9 deg F / 5 deg c = 63 below boiling deg F
(1 deg C = 9/5 deg F)
212 - 63 = 149
So 65 deg C = 149 deg F
Not sure exactly what's wanted, but
212 deg F = boiling
65 deg C = 149 deg F
Check: 65 * 9/5 + 32 = 149 as found above
Explanation:
Explain how frequency and amplitude affect sound vibrations?
Answer:
The larger the amplitude of the waves, the louder the sound. Pitch (frequency) – shown by the spacing of the waves displayed. The closer together the waves are, the higher the pitch of the sound.
Explanation:
I will give more points
for this thank you I u helped
me
Answer:
weight = mass×gravity
15×9.8147Nstay safe healthy and happy.The voltage drop across any component is
the difference in voltage referenced to
between the two terminals of
the component.
Answer:
The voltage si the nevery Hokage de Naruto y fue su amigo
What is the pressure at a depth of 15 cm brine of density 1.2/cm³?
P = density × gravity acceleration × height
P = 1200 × 9.81 × 15/100
P = 1765.8
From the question we have got;
Height: 15 cm = 15/109m = 15 × 10-²Density: 1.2 cm³= 1.2g/cm³ = 1.2 × 10³ kg/m³Acceleration due to gravity:10m/s²Pressure = ρgh
= 15 × 10-² × 1.2 × 10³ × 10
= 1800 Nm-²
As the wavelength of light decreases,
What happens
Answer:
Waves. Refraction is an effect that occurs when a light wave, incident at an angle away from the normal, passes a boundary from one medium into another in which there is a change in velocity of the light. ... The wavelength decreases as the light enters the medium and the light wave changes direction.
Explanation:
As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. ... Mechanical and electromagnetic waves with long wavelengths contain less energy than waves with short wavelengths.
A uniform plank 4 m long is pivoted about its center to an angle of 30° with the vertical. What magnitude of force
must be applied 0.5 m from the pivot to maintain equilibrium with a 4 kg mass hanging from one end?
A. 80 N
B. 20 N
C. 40 N
D. 60 N
E. 100 N
Answer:
A. 80 N
Explanation:
Since the uniform plank is pivoted at its center at an angle of 30 to the vertical, then it is 90° - 30° = 60° to the horizontal.
Let L be the length of the plank = 4 m, the perpendicular distance of the 4 kg mass form the pivot point is Lcos60°/2. Then the moment of the 4 kg mass about its pivot point is mgLcos60/2 where m = mass = 4 kg and g = acceleration due to gravity = 10 m/s²
Let F be the force applied at 0.5 m from the pivot point. The perpendicular distance of F from the pivot point is 0.5cos60°. Thus the moment of this force about the pivot point is F × 0.5cos60° = 0.5Fcos60°
Since both moments are the same for equilibrium,
mgLcos60/2 = 0.5Fcos60°
F = mgL/(2 × 0.5 m)
F = 4 kg × 10 m/s² × 4 m/1 m
F = 80 kgm/s²
F = 80 N
If a chemical spill reaches groundwater, the availability of which resource will be reduced for people in the area?
A. fish
B. drinking water
C. hydroelectric energy
D. geothermal energy
Write a short narrative from the perspective of a mineral moving through the rock cycle. The mineral must undergo at least four changes.
Answer: Mineral and non- mineral components circulate in the environment in different forms whether it is in the form of solid, liquid, or gas.
Explanation:
Plants take up the minerals like calcium, potassium, nitrogen, sulphur, and others from the soil and utilize them for their survival and growth. These minerals are stored in the flowers, leaves, roots, and other plant parts and these plant parts are consumed by humans and animals. So, inorganic minerals from the soil are converted into organic forms by the plants again the minerals are decomposed into inorganic forms after the death of organisms and again mineral is converted into inorganic form in the soil and these minerals can become the component of the rocks after the sedimentation of the soil.
Explain why a kangaroo can jump higher as it's speed increases
Answer:
See explanation
Explanation:
The ability of the Kangaroo to jump higher is due to the stretching of its tendons as its speed increases.
As the tendons are being stretched more and more, the elastic potential energy increases with each increasing stretch.
This elastic potential energy is translated into gravitational potential energy hence the Kangaroo jumps higher as it's speed increases.
The kangaroo can jump higher as it's speed increases due to the ability of its tendons to stretch more and more.
The jumping of kangaroo can be related with the concept of spring force and spring potential energy. The spring force is given as,
F = kx
And spring elastic potential energy is,
[tex]U=\dfrac{1}{2}kx^{2}[/tex]
In both the cases, k is the spring constant and x is the stretching distance.
When kangaroo try to jump, the tendons provide extra flexibility to jump higher due to the more stretching. Here, the value of x increases. As value of x increases, ultimately more acceleration is provided to increase its speed.As the tendons are being stretched more and more, the elastic potential energy increases with each increasing stretch.
This elastic potential energy is translated into gravitational potential energy hence the Kangaroo jumps higher as it's speed increases.
Thus, we can conclude that the kangaroo can jump higher as it's speed increases due to the ability of its tendons to stretch more and more, such that more energy conversion of energy takes place.
Learn more about the elastic potential energy here:
https://brainly.com/question/25029446
HELP PLEASE
A virtual image is produced by a convex mirror that is 1.60 cm from the mirror. If the magnification is 0.20, how far from the mirror is the object?
The distance of the object from the mirror Is = –8 cm
Calculation of the object distance of a mirrorThe image distance from the mirror = –1.60cm
The magnification of the image = 0.20
The distance of the object from the mirror can be calculated using the formula below:
magnification= – image distance/ object distance
Substitute the available values into the equation above,
0.20 = – 1.60/ X
Make X the subject of formula,
X = – 1.60/0.20
X = – 8cm
The negative sign indicates that the image is virtual which is formed behind the mirror.
Therefore, the distance of the object from the mirror Is = –8 cm.
Learn more about mirror equations here:
https://brainly.com/question/26257987
Select the correct answer.
What does the number, or density, of field lines on a source charge indicate?
O A.
direction of charge on the source charge
OB.
amount of charge on the test charge
O c.
amount of charge on the source charge
OD.
direction of charge on the test charge
Reset
Next
Answer:
amount of charge on the source charge
Calcium is combined with Nitrogen in a chemical reaction. The formula of the compound created, Calcium Nitride, is
Answerrrrrrrrrrrrrrrrrt
Calcium is a 2+ ion which would be written as Ca^2+
Nitrogen is a 3- ion which is written as N^3-
When combined to create Calcium Nitrate it is Ca3N2
See picture:
What causes hot spot volcanoes to form?
Answer:
A volcanic "hotspot" is an area in the mantle from which heat rises as a thermal plume from deep in the Earth. High heat and lower pressure at the base of the lithosphere (tectonic plate) facilitates melting of the rock. This melt, called magma, rises through cracks and erupts to form volcanoes.
A radio station broadcasts at a frequency of 600 kHz. Knowing that radio waves have a speed of 300 000 000 m/s, what is the wavelength of
these waves?
Answer:
ccvtesgdujtdchgdrgggggggfrrrtyfaasdddfffghgdshh
Astronomical observatories have been available since ancient times, and many cultures set aside special sites for astronomical observations. The thing modern observatories have that was missing from these older observatories until about 1610 was __________________. Group of answer choices
Answer:
The answer is "telescopes".
Explanation:
Throughout ancient times, astronomical observatories have indeed been available, and so many historical locations were reserved for astronomical observations. All contemporary astronomers lacked within those older telescopes were lenses until 1610. A telescope is indeed an instrument used to view far-off objects. Telescopes often are being used to look at planets and stars.
In the diagram, q1 = -3.33*10^-9 C and
q2 = -5.22*10^-9 C. The electric field at
point P is zero. What is the distance
from P to q2?
Answer:
The distance will be "0.319 m".
Explanation:
The diagram of the given question is not attached with the problem. Below is the attached figure.
The given values are:
[tex]q1 = -3.33\times 10^{-9} \C[/tex]
[tex]q2 = -5.22\times 10^{-9} \ C[/tex]
As we know,
The electric field will be equivalent as well as opposite throughout the direction, then
⇒ [tex]\frac{R.q1}{(0.255)^2} =\frac{R.q2}{r^2}[/tex]
⇒ [tex]r^2=\frac{q2}{q1}\times (0.255)^2[/tex]
By putting the values, we get
⇒ [tex]=\frac{-5.22\times 10^{-9}}{-3.33\times 10^{-9}}\times (0.255)^2[/tex]
⇒ [tex]=1.568\times 0.065[/tex]
⇒ [tex]r^2=0.10193[/tex]
⇒ [tex]r=\sqrt{0.10193}[/tex]
⇒ [tex]0.319 \ m[/tex]
An object moving at a constant velocity will always have a
Answer:
It will always have a zero acceleration
In what way may the turning effect of a force be increased?
By decreasing the perpendicular distance between the force and the pivot point
By lubricating the fulcrum with oil or grease.
By increasing the perpendicular distance between the force and the pivot point.
By reducing the applied force
Answer:
By increasing the perpendicular distance between the force and the pivot point
Explanation:
Due to the formula [tex]force * distance[/tex],
An increase in distance would cause the turning force to increase
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expalin how waves energy and matter are related