Answer:
hey there!Explanation:
hope it is correct
it is. 55.556 metres per second
hope it helps. and have a nice day!I need a list of all of these please, not the names, but the accronyms
Answer:
N
O
O
B
Explanation:
D- Dont
G- Get
P- people
T- to
D- do
W- work
F- for
Y-You
What was the trend in pesticide use between 1960 and 1980?
Answer:
USDA ERS
Explanation:
咯啦 体会i似水 THIS IS MY ANSWER
Answer:
i think it's the trend of using machinery, and fuel for mechanical weed control.
A car is coasting backwards downhill at a speed of 3.0 m/s when the driver gets the engine started. After 2.5
s, the car is moving uphill at 4.5 m/s. Assuming that uphill is positive direction, what is the car's average
acceleration.
Answer:
0.6m/s²
Explanation:
Given parameters:
Initial velocity = 3m/s
Final velocity = 4.5m/s
Time taken = 2.4s
Unknown:
Average acceleration = ?
Solution:
To solve this problem, we use the expression:
Acceleration = [tex]\frac{v - u}{t}[/tex]
v is the final velocity
u is the initial velocity
t is the time taken
Acceleration = [tex]\frac{4.5 - 3}{2.5}[/tex] = 0.6m/s²
What is the force that causes objects to move in circles?
Answer:
centripetal force.
Explanation:
Answer:
centripetal force - force directed toward the center of a circle,
causes an object to move in a circle.
Explanation:
Have a gooood day!
For which part of the body is Doppler ultrasound most likely to be used in
imaging?
O A. The circulatory system
B. The large and small intestines
C. A broken leg
D. A tumor
Answer: The answer is A! The Circulatory system.
Explanation:
Answer:
A
Explanation:because its right and i just did it hope this helps please mark me
person who answering get 100
points plz
Answer:
the one above is rigth
Explanation:
A kettle transfers 6000 J of energy electrically. 1500 J of this is wasted. What is the efficiency of this kettle?
Answer:
Effi = 75 %
Explanation:
That is, the 6000 [J] is electrical energy that is transferred to the liquid, of that amount of energy 1500 [J] is dissipated or lost.
That is, from that amount of energy the difference between the energy that is supplied and the one that is lost is the energy that absorbs the liquid in the kettle.
[tex]Q=6000-1500\\Q=4500[J][/tex]
That is 4500 [J] enter the liquid that is heated.
Efficiency can be calculated as the amount of energy that the liquid receives over the energy that is supplied.
[tex]Effi = 4500/6000\\Effi = 0.75[/tex]
Under what condition will kinetic friction slow a sliding object?
Explanation: Slowing Down (or Stopping) occurs when the force of kinetic friction is greater than that of the external force. This also follows Newton's first law of motion as there exists a net force on the object.
what is a amplitude????????
please answer WILL GIVE BRANLIEST
This scenario is directly related to the Inertia of direction, which states that an object will stay moving in the same direction unless a force acts on it.
If you need to add more to the answer above, you can probably say something about how the sudden change in direction will cause your body to want to continue on in the direction it was originally going, so the car veering suddenly will cause you to be violently pulled in it's direction.
I like to think of it like a car crash, the reason why head-on collisions are so deadly are because the car will halt but your body will continue moving at the same speed the car was going.
That's my best guess. Hope this helps! :)
The amount of friction depends on the weight of the objects pressing together.
Answer:
The amount of friction depends on the force pushing the surfaces together. If this force increases, the hills and valleys of the surfaces can come into closer contact. The close contact increases the friction between the surfaces. Objects that weigh less exert less downward force than objects that weigh more.
Explanation:
Friction depends partly on the smoothness of the contacting surfaces, a greater force being needed to move two surfaces past one another if they are rough than if they are smooth.
An object has an initial velocity of 15 m/s. How long must it accelerate at a constant rate of 3.0 m/s^2 before its final velocity is equal 30 m/s?
Answer: v=u + at
V= Final velocity =30m/s
U= initial velocity = 15m/s
a= acceleration = 3m/s^2
t= time taken
t=(v-u)/a
t=(30-15)/3
t=5s
Explanation:
A block attached to a spring with unknown spring constant oscillates with a period of 8.0 ss . Parts a to d are independent questions, each referring to the initial situation. What is the period if Part A The mass is doubled
Answer:
What is the period if Part A The mass is doubled
T = √2 * 8 = 11.313 s
Explanation:
The equation for the period of an object attached to a spring is express as:
T=2π[tex]\sqrt{m/k}[/tex]=
Where m is the mass and k is the spring constant
If the mass is doubled:
T = √2 * 8 = 11.313 s
The new time period will be 11.312 secons
The time period (T) of the oscillation in a spring with spring constant k, attached to an object of mass m is:
[tex]T=2\pi \sqrt{\frac{m}{k} }[/tex]
T = 8 seconds (given)
Now if the mass is doubled, [tex]m^{'}=2m[/tex]
then time period [tex]T^'[/tex]:
[tex]T^{'}=2\pi \sqrt{\frac{m^'}{k} } \\\\T^{'}=2\pi \sqrt{\frac{2m}{k} } \\\\T^'}=\sqrt{2}T\\\\T^'}=1.414*8\\\\T^'}=11.312[/tex]seconds will be the new time period.
Learn more about spring oscillations:
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I just need help with physics (in regards of kinetic energy, gravitational potential energy, work, work and mechanical objects) since I don't understand it at all. thank you to those who can/will help!
Answer:
First, the total energy of an object is E, and this is conserved if we do not interact with the object.
We can write:
E = U + K
Where U is the potential energy. For an object of mass M that is lifted a height H from the ground, the potential energy is:
U = M*g*H
where g is the gravitational acceleration. g = 9.8m/s^2
And K is the kinetic energy, written as:
K = (M/2)*v^2
where v is the velocity of the object.
a) We have an object with mass M = 80kg, lifted at a height H = 10m.
The gravitational potential energy is then:
U = 80kg*9.8m/s^2*10m = 7,804 J
And because the object is not moving, the velocity is equal to zero, then at this point the kinetic energy is equal to zero, which will mean that the total energy E is equal to the potential energy.
b) At the instant before hitting the ground the height of the object is near zero, then at this point the potential energy is almost zero, which means that all the potential energy has transformed into kinetic energy. Then the kinetic energy at this point should be:
K = 7,804 J
c) Work is defined as a force doing a motion.
W = F*d
F = force.
d = distance.
In this case, the force is the weight of the object.
Weight = 80kg*9.8m/s^2 = 784N
And the distance that the object moves is 10 meters, then the work done is:
W = 784N*10m = 7,840 J
d) The final velocity v can be obtained from the kinetic energy.
We know that K = (80kg/2)*v^2 = 7,840 J
v^2 = 7,840 J/40kg
v = √( 7,840 J/40kg) = 14m/s
Help please! Will give brainliest to first correct answer!
Answer:
1) Addition of a catalyst
2) To change the reaction rate of slope B to look like slope A, simply add a catalyst to speed up the rate of reaction, giving you a higher amount of products in a shorter amount of time (line A)
Explanation:
1 and 2)Two things can alter the rate of a reaction, either the addition of a catylist which will not alter the composition of the products or reactants, but will accelerate the reaction time, or an increase in temperature will also increase the rate at which a reaction will occur.
You could choose temperature also and have the same result, it's your choice both are correct, but catalyst is the easiest.
A car advertisement claims their car can go from a stopped position to 60 miles per hour in 5 seconds. The advertisement is describing the
car’s
Answer:
Acceleration
Explanation:
The advertisement is describing the acceleration of the car.
Acceleration is the rate of change of velocity per unit of time. It can be expressed mathematically as;
Acceleration = [tex]\frac{v - u}{t}[/tex]
v is the final velocity
u is the initial velocity
t is the time taken
Any quantity that specifies the rate of change of velocity of a body within a given time frame is describing its acceleration.
Which element is most likely to have an oxidation number of +1?
O A. 1
B. Ar
Ос. К
D. Be
Answer:
K
Explanation:
.........................
8
Which subatomic particle does not have a charge? *
protons
neutrons
Or electrons ?
Answer:
Answer is neutrons.
Explanation:
The nucleus contains two types of subatomic particles, protons and neutrons.the protons have a positive electrical charge and the neutrons have no electrical charge.
I hope it's helpful!
If the same strength force is exerted on two objects why might they be affected differently?
Answer:
Due to their mass
Explanation:
If the same strength force is exerted on two objects they might be affected differently due to their mass.
The way objects reacts to a force impact is largely dependent on their mass.
The mass of an object is the amount of matter it contains.
According to the Newton's second law of motion, the force applied on a body is directly proportional to the product of its mass and acceleration.
Force = mass x acceleration
Therefore, the way a force acts on a body is a function of its mass.
What controls how fast an object falls?
Answer:
gravity
Explanation:
it controls how fast an object falls
Drag the tiles to the correct boxes to complete the pairs.
Match each action to its result.
The strength of the electromagnet increases.
The electromagnet turns off.
The poles of the electromagnet reverse.
Turn off the battery supply.
Place a magnetic core inside the coll of wire.
Change the direction in which the current flows.
Answer:
1) The strength of the electromagnet increases → Place a magnetic core inside the coil of wire
2) The electromagnet turns off → Turn off the battery supply
3) The poles of the electromagnet reverse → Change the direction in which the current flows
Explanation:
when current passes through a coil it behaves a an electromagnet.
Magnetic field strength is given by
B = μ N I
N is no of turns and
I is the current through coil
μ is permeability of the medium or core in the coil.
1). Magnetic core increase permeability μ so it will strengthen magnetic field:
B = μ N I
2). When the battery turns off current becomes zeroi.e I=0
So B = μ N * 0
⇒ B = 0
so electromagnet turns off
3). Direction of magnetic field can be determine by right hand rule, i.e curl the fingers in the direction of current, thumb will point in the direction of north pole.
so changing current direction will change direction of magnetic field.
2. An object with a mass of 3.8 kg has four forces acting on it.
4.7N
6.2 N
3.8 kg
6.2 N
F2
If the object has a net force of 12.5 N down, what is the magnitude, in Newtons, of the unknown force?
Answer:4.7N
Explanation:both of the sides are equal
The net force acting on 3.8 kg object is given 12.5 N. Thus individual forces acting downwards will be 6.2 N each. Thus, the unknown force which balance the other force is 4.7 N.
What is force?Force is an external agent acting on an object to deform it or to change it from the state of rest or motion. There are various kinds of forces such as magnetic force, frictional force, gravitational force etc.
If two forces are acting from the same direction of an object, the net force will be their sum. If they are acting in opposite directions, then the opposite forces will can cancel each other.
Here the net force is 12.5 which will be the sum of the force of 6.2 N both acting downwards. The force 4.7 is cancelled here by an equal and opposite force. Therefore, the unknown force is 4.7 N.
To find more on force, refer here:
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What moves in and out of an open system like the human body?
Carbon dioxide because that's what we breath out?
To impart the greatest momentum to an object, should
you exert the largest force possible, extend that force for
as long a time as possible, or both? Explain.
A 6.50 meter high cylinder is filled with alcohol(density =806 kg/m^3). What is the pressure at the bottom of the cylinder?
Answer:
152642.2
Explanation:
the pressure at the bottom of the cylinder is
P = Po + rho gh
=101300+806(9.8)(6.5)
=152642.2 Pa
The pressure at the bottom of the cylinder is 152642.2 Pa
What's pressure?If the density of the liquid is ρ then the burden of the liquid inside the first cylinder is W1=ρh1S1g and the strain at the bottom of the primary cylinder (neglecting atmospheric strain) is P1=W1/S1=ρh1g.
Stress, inside the physical sciences, is the perpendicular force according to unit location, or the strain at a point inside a confined fluid.
Calculation:-
pressure = ρgh⇒806 kg/m^3(10)*6.50
⇒152642.2 Pa
Learn more about pressure here: https://brainly.com/question/25736513
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While swimming the elementary backstroke your eyes should be looking directly at..
Answer:
the ceiling
Explanation:
i dont know man but thats what my swimming instructor said, but i havent swam in like 3 years so ..
Do all the bulbs have the same brightness?
Answer:
No
Explanation:
Some our led some our more on the yellow side
Answer
All Bulbs DO NOT have the same brightness.
Explanation:
Since each bulb has different resistance, it glows with different brightness. If current passes through it according to each bulb's requirement,then the bulbs will glow by using their maximum power and will glow with different brightness.
Which scientific discovery commonly attributed to Newton did Hooke also claim to have played a major role in?
studies into nature of light
development of telescopes
law of gravitation
laws of motion
Answer:
laws of gravitation
Explanation:
my school has the same course as yours and i got it right
A stationary block of mass 35 Kg is suspended on a string.What is the tension in the string ?( Neglect the mass of the string)
Answer:
Tstring = 343.35 [N]
Explanation:
Since the block is in equilibrium, we can say that the sum of the forces on the Y-axis or vertical is equal to zero.
∑Fy = 0
[tex]T_{string}-W=0[/tex]
where:
Tstring = tension of the string [N]
W = weight of the block [N]
And the weight can be calculated multiplying the mass of the block by the gravity acceleration.
Now replacing:
[tex]T_{string}=m*g\\T_{string}=35*9.81\\T_{string}=343.35[N][/tex]
Two objects, A and B, are 10 m apart. Objects C and D are 20 m apart. The gravitational attraction between objects C and D is greater than the attraction between objects A and B. Explain the reason for the difference in gravitational attraction.
Answer:
[tex]F=\frac{Gm_1m_2}{r^2}[/tex]
where , F = Gravitational force
G = Gravitational constant
[tex]m_1[/tex] = mass of first object
[tex]m_2[/tex] = mass of second object
r = distance between the two objects
As Gravitational force is inversely related to the distance between two objects, lesser is the distance , more will be the gravitational force. As distance between C and D is more , the force shoulld have been less. That means the product of the masses of the objects C and D is more than the product of the masses of the objects A and B.
Answer:
m
Explanation:
m
