look at the illustration , what concepts of heat are being shown in this pictures
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Answer:

Calculate 'R' of convex mirror and height of the real image

the radius of the convex mirror is 48cm

Explanation:

Distance between convex and concave mirror is =60cm

Radius of the concave mirror (R) = 200cm

For the concave mirror, u = ∞

V = {R}/{2}=100cm

The object for the convex mirror and the final image is on the pole of the concave mirror, and distance between convex and concave mirror is 60cm

u_1=60-100 =-40cm

Object will be behind the convex mirror

1/f=1/40+1/60  

f=24cms

the radius of the convex mirror is 48cm

Answer:first of all what is your question and i can give and example which is Use them when you have 2 forces named Fa & FF or Fg & Ff acting in opposite directions on an object and you need to know the resultant of your 2 forces.

Explanation:

i searched it up

Answer:

Requirements to become an Osteologist

Explanation:

After completing the bachelor's degree, students should begin working towards a master's degree or Ph. D specializing in forensic anthropology. Forensic anthropology is closely related to osteology and it will help in the forensic work.

Answer:

C. 2m to the right of the rollerblader

Explanation:

The turtle is 2m to the LEFT of the rollerblader, so its the only option not describing the position of the turtle:)

Hope this helps, have a great day;)

Answer:

25.0 less force

Explanation:

Answer: In that case, Put something like "My hypothesis is that the car will take (x) seconds to get to checkpoint 1, (x) seconds to get to checkpoint 2, (x) seconds to get to checkpoint 3, and (x) seconds to get to checkpoint 4" Replacing x with random numbers, or number close to the actual found numbers, but honestly as long as the guesses arent outrageous you should get the question right

Explanation:

I formulate a hypothesis which is based on his observations as to what happens when both the rock and the wood are immersed in water.

Density is described as mass per unit volume which is an important parameter for understanding fluid and its properties. Its unit is kilogram per cubic meter.

The mass and density relation is given as:

mass = density × volume

In this scientific investigation if the volume or density of objects determines whether solid objects float or sink in water, I performed a density, mass, and volume experiment using a rock and a standard-sized piece of wood. It is important that the chosen piece of wood is larger than the rock where the rock is small enough to fit inside the measuring cylinder.

Thus, I formulate a hypothesis which is based on his observations as to what happens when both the rock and the wood are immersed in water.

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Your question is incomplete, most probably the complete question is:

Density of solids What is your hypothesis (or hypotheses) for this experiment?.

Answer:

0.13m/s

Explanation:

jhghffhjffhjfhjfhjf

Explanation:

A compass needle acts as a Magnet

Answer: The acceleration due to gravity is the constant pull towards the core of the earth due to gravity on earth. It is abbreviated by the letter g and is equal to -9.81 m/s².

Explanation:

The weight of a 75 kg person on Earth is 735 N, The correct option is D.

Acceleration due to gravity is the acceleration that an object experiences due to the gravitational force exerted by a massive body, such as Earth. The acceleration due to gravity on Earth is approximately 9.8 meters per second squared (m/s^2) and is denoted by the symbol "g".

The acceleration due to gravity is a vector quantity, which means that it has both magnitude and direction. The direction of the acceleration due to gravity is always downwards, towards the center of the massive body.

The acceleration due to gravity is a constant value near the surface of the Earth, but it can vary slightly depending on altitude, latitude, and the composition of the Earth's interior. For example, at higher altitudes, the acceleration due to gravity decreases slightly, while at the equator, it is slightly greater than at the poles due to Earth's rotation.

The acceleration due to gravity plays an important role in many physical phenomena, including free fall, projectile motion, and the behavior of fluids in containers.

Here in the Question,

The weight of a 75 kg person on Earth can be calculated using the formula:

weight = mass x acceleration due to gravity

Substituting the given values, we get:

weight = 75 kg x 9.8 m/s^2

weight = 735 N

Therefore, the weight of a 75 kg person on Earth is 735 N, which is option D.

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Answer:

If an object is in motion, then the object will stay in motion because they go the same direction unless acted upon by an unbalanced force.

Explanation:

i got it right . :)

Explanation:

force(f)=250N

acceleration(a)=5m/sec²

mass(m)=?

now,

f=m.a

f=m

a

m=250

5

m=50kg

i hope so,

Answer:

The Moon rotating around Earth and the Earth rotating around the Sun

Explanation:

Answer:

the rotation of Earth on its axis

Explanation:

Did it on study island

Answer:

A

Explanation:

Hubble’s law states that galaxies that are farther away have a greater red shift, so the speed at which a galaxy is moving away is proportional to its distance from the Earth. Red shift is a phenomenon due to Doppler shifting, so the shift of light from a galaxy to the red end of the spectrum indicates that the galaxy and the observer are moving farther away from one another. Doppler shifting also is found in the Energy and Waves section of this course.

Answer:

All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms. ... Therefore, the atomic number of an atom also tells you how many electrons the atom has. This, in turn, determines many of the atom's chemical properties.

Answer:mass

Explanation:

Answer:

Orbit/circumference = 471.24 million .

c = 2πr

150/2 = radius

radius = 75.

π = 3.14

2 x π x 75 = 471.24

Answer:

Speed = 8.79m/s

Explanation:

Given the following data;

Height = 4m

Horizontal distance = 8m

To find the time, we would use the second equation of motion

S = ut + ½at²

We know that acceleration due to gravity is equal to 9.8m/s²

Initial velocity, u = 0

Substituting into the equation, we have;

4 = 0(t) + ½*9.8*t²

4 = 0 + 4.9*t²

4 = 4.9t²

t² = 4/4.9

t² = 0.82

Taking the square root of both sides, we have;

t = 0.91 secs

To find the speed;

Speed = horizontal distance/time

Speed = 8/0.91

Speed = 8.79m/s

Therefore, the pelican's speed is 8.79 meters per seconds.

Answer:

The policeperson will not be able to catch the speeder in 10 seconds

Explanation:

The maximum acceleration of the 2020 Ford police interceptor, a = 4.4 m/s²

The rate at which the speeding car is moving, v = 70 mph (31.3 m/s)

The time after which the policeperson takes off = 1 second

The time, t, at which the policeperson catches the speeding car is given as follows;

s = u·t + 1/2·a·t²

Where;

u = The initial velocity of the Ford police interceptor = 0

∴ s = 0 × t + 1/2·a·t² = 1/2·a·t²

s = 1/2·a·t²

s = v × (t + 1)

Equating both equations, gives;

v × (t + 1) = 1/2·a·t²

Substituting the values, we get;

31.3 × (t + 1) = 1/2 × 4.4 × t²

31.3·t + 31.3 = 2.2·t²

2.2·t² - 31.3·t - 31.3 = 0

By the quadratic formula, we have;

t = (31.3 ± √((-31.3)² - 4×2.2×(-31.3))/(2 × 2.2)

t ≈ -0.938 seconds or t ≈ 15.165 seconds

The policeperson will catch the speeder in approximately 15.165 seconds

Therefore, the policeperson will not be able to catch the speeder in 10 seconds.

Answer:

The ball reaches Barney  head in  [tex]t = 8 \ s[/tex]

Explanation:

From the question we are told that

 The rise velocity is  [tex]v = 14.70 \ m/s[/tex]

  The height considered is [tex]h = 196 \ m[/tex]

   The horizontal velocity of the large object is  [tex]v_h = 8.50 \ m/s[/tex]

Generally from kinematic equation  

   [tex]s = ut + \frac{1}{2} gt^2[/tex]

Here s is the distance of the object from Barney head ,

        u is the velocity of the object along the vertical axis which is equal but opposite to the velocity of the helicopter

So  

     [tex]u = -14.7 m/s[/tex]

So

    [tex]196 = -14.7 t + \frac{1}{2} * 9.8 * t^2[/tex]

=  [tex]4.9 t^2 - 14.7t - 196 = 0[/tex]

Solving the above equation using quadratic formula  

    The value of  t obtained is  [tex]t = 8 \ s[/tex]

Answer:

The potential difference between the plates of the capacitor is 300V

Explanation:

Given;

capacitance of the capacitor, C = 5μF = 5 x 10⁻⁶ F

charge of the capacitor, Q = 1500μC = 1500 x 10⁻⁶ C

The potential difference between the plates of the capacitor is given by;

V = Q / C

Where;

V is the  potential difference between the plates

Q is the charge of the capacitor

C is the capacitance

[tex]V = \frac{Q}{C} \\\\V = \frac{1500*10^{-6}}{5*10^{-6}} \\\\V = 300 \ volts[/tex]

Therefore, the potential difference between the plates of the capacitor is 300V

The applied force is parallel to the ground, so the net vertical force on the sled is 0. By Newton's second law, this means the normal force and weight of the sled cancel out:

n - w = 0

n = w

n = m g

n = (15.7 kg) (9.80 m/s²)

n = 153.86 N

Answer:

B) He can demonstrate that water can be boiled on a simple kitchen stove.

Explanation:

Took the test edge2020 :)

He can demonstrate that water can be boiled on a simple kitchen stove.

The following information should be considered;

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Answer:

f = 485.62 N

Explanation:

Since, the bag is moving with some acceleration. Hence, the unbalanced force will be given as:

Unbalanced Force = Horizontal Component Applied Force - Frictional Force

Unbalanced Force = Fx - f

But, from Newtons Second Law of Motion:

Unbalanced Force = ma

comparing the equations:

ma = Fx - f

f = F Cos θ - ma

where,

f = frictional force  = ?

F = Applied force  = 593 N

m = mass of person = 49 kg

a = acceleration = 0.57 m/s²

θ = Angle with horizontal = 30°

Therefore,

f = (593 N)(Cos 30°) - (49 kg)(0.57 m/s²)

f = 513.55 N - 27.93 N

f = 485.62 N

Answer:

n physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion.[1] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

In classical mechanics, the kinetic energy of a non-rotating object of mass m traveling at a speed v is {\displaystyle {\begin{smallmatrix}{\frac {1}{2}}mv^{2}\end{smallmatrix}}}{\begin{smallmatrix}{\frac {1}{2}}mv^{2}\end{smallmatrix}}. In relativistic mechanics, this is a good approximation only when v is much less than the speed of light.

The standard unit of kinetic energy is the joule, while the imperial unit of kinetic energy is the foot-pound.

Explanation:

Answer:

kinetic energy is the energy that an object posses due to their motions.

Explanation:

eg:When you let go of that ball and let it fall, the potential energy converts into kinetic energy, or the energy associated with motion. There are five types of kinetic energy: radiant, thermal, sound, electrical and mechanical.

Answer:

0.323232....m/s2

Explanation:

acceleration=V/t

32m/s/99s=0.3232m/s2