10) Challenge: A student is pushing a 50 kg cart, with a force of 600 N. Another student measures the speed
of the cart, and finds that the cart is only accelerating at 3 m/s2. How lar is the force pushing back on the car?
Hint: Draw a diagram showing the cart, and the two forces acting on it.

Answer: A force can be applied to another object by a direct push, pull, or drag.

Explanation:

Answer:

pushing ,pulling and dragging

a force is a push or pull. hope i helped!

Answer:

incidence ray is the one that comes from the source and hits the object while reflected ray is the ray that leaves the object after striking it

Explanation:

Answer:

true

Explanation:

place hand under base and one on the arm/handle

Answer:

Magnetic field patterns of two permanent magnets.

Explanation:

From the attached picture, it can be observed that iron filings has been caused to align with respect to the magnetic fields of permanent the magnets. The concentration of the filings at some definite spots shows the poles of the magnet. This forms a magnetic field pattern.

This simply illustrates the effect of magnetic fields on iron filings by placing magnets below a paper or cardboard with iron filings on the top of the paper. The magnetic field pattern would be lost if the magnets are removed.

C) OUTER CORE

IT IS THE THICKEST

Answer:

22425 J

Explanation:

From the question,

Applying

Q = cm(t₂-t₁).................. Equation 1

Where Q = Thermal Energy, c = specific heat capacity of aluminium, m = mass of aluminium, t₂ = Final Temperature, t₁ = Initial Temperature.

Given: c = 897 J/kg.K, m = 1.0 kg, t₁ = 50 °C, t₂ = 25 °C (The final temperature is reduced by half)

Substitute these values into equation 1

Q = 897×1×(25-50)

Q = 897×(-25)

Q = -22425 J

Hence the thermal energy lost by the aluminium is 22425 J

Answer:

c = 0.4356 J/gK

Explanation:

Given the following data;

Mass = 450 grams

Initial temperature, T1 = 150°C

Final temperature, T2 = 53°C

Quantity of heat = 34500 Joules

To find the specific heat capacity of the metal;

Heat capacity is given by the formula;

[tex] Q = mcdt[/tex]

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt = T2 - T1

dt = 53 - 150

dt = -97°C

Converting the temperature in Celsius to Kelvin, we have;

dt = 273 + (-97) = 176 Kelvin

Making c the subject of formula, we have;

[tex] c = \frac {Q}{mdt} [/tex]

Substituting into the equation, we have;

[tex] c = \frac {34500}{450*176} [/tex]

[tex] c = \frac {34500}{79200} [/tex]

c = 0.4356 J/gK

Explanation:

A is excretion

B is digestion

so my guess is c

Answer:

When we pull the piston from inside to outside, a suction is created between the liquid and piston. This causes the liquid to move upwards and this allows us to draw a drug from a bottle

Explanation:

Answer:

A

Explanation:

magnifying = enlarging something or making it seem bigger

Answer:

P = d g h      pressure due to density of liquid of height h

d1 g h1 = d2 g h2       since P1 equals P2

d1 h1 = d2 h2      and the density of Hg is 13.6 times that of water

h2 = (d1 / d2) * h1 = 13.6 * 70 cm =  952 cm or 9.52 m

Answer:

Velocity is the speed of something in a given direction.

Explanation:

It is a vector quantity that indicates displacement, time, and direction. It is one of the concepts in kinematics, which is the branch of classical mechanics that describes the motion of bodies.

Hope this helps! :)

Explanation:

Answer:

Usually, electrical conductors have loosely bound electrons. Materials that conduct heat are thermal conductors. ... Metals typically conduct both heat and electricity. Carbon conducts ​electricity as graphite, but insulates as diamond, so the form or allotrope of a material can be important

Answer:

h = 493 m

Explanation:

Given that,

A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.9 s later.

The total distance covered by the rock is 2d. We know that,

Speed = distance/time

[tex]v=\dfrac{2d}{t}\\\\d=\dfrac{vt}{2}\\\\d=\dfrac{340\times 2.9}{2}\\\\d=493\ m[/tex]

So, the height of the cliff is equal to 493 m.

Answer:

the electric force and the magnetic force.

Answer:

the speed of the wave on the string is 43.16 m/s

Explanation:

Given;

first harmonic of the wave formed by the string, f₀ = 26 Hz

length of the string, L = 0.83 m

The wavelength for first harmonic of the wave is calculated as;

L = N ----> N

L = λ₀/2

λ₀ = 2L

The speed of the wave on the string is calculated as follows;

v = f₀λ₀

v = f₀ x 2L

v = 26 x 2 x 0.83

v = 43.16 m/s

Therefore, the speed of the wave on the string is 43.16 m/s

Answer:

The answer to your question is sexual reproduction

Explanation:

Mark me brainliest (WHY?) cause my answer is correct

Answer:

vf = 7 m/s

Explanation:

3.

The final velocity of the ball right before it hits the ground can be found by using the third equation of motion:

[tex]2gh = v_f^2 - v_i^2[/tex]

where,

g = acceleration due to gravity = 9.81 m/s²

h = height = 2.5 m

vf = final velocity = ?

vi = initial velocity = 0 m/s

Therefore,

[tex]2(9.81\ m/s^2)(2.5\ m) = v_f^2 - (0\ m/s)^2\\v_f = \sqrt{49.05\ m^2/s^2}\\[/tex]

vf = 7 m/s

Answer:

interference

Explanation:

You can just search this.

Question:

A ball has a 17 J of kinetic energy and lB mechanical energy is 25 Joule

a. Find the gravitational potential energy of the ball.  

b. if the ball has a mass of 3.2 kg, what is its height above the ground?  

c. What is the speed of the ball?

Answer:

a.  = 85

b. h = 0.25 m

c. = 3.26 m/s

Explanation:

Part A

PEgrav = m ו g • h

In the above equation, m represents the mass of the object, h represents the height of the object and g represents the gravitational field strength (9.8 N/kg on Earth) - sometimes referred to as the acceleration of gravity. So, to find:

GPE = ME - KE = 25 - 17 = 85

Part B

The formula simplifies to: h max = h + V₀² / (2 × g) and the time of flight is the longest.

The vertical velocity is equal to 0 (Vy = 0), and that's the case of horizontal projectile motion.

The equation may be written as:

    GPE = mgh

    8 = 3.2 × 10 × h

    h = 0.25 m

Part C

The ball speed is calculated by dividing the distance by the time. If the time was 3 seconds, the average speed will be 60/3 = 20 feet per second (6.1 m/sec). KE = 1/2 MV²

            17 = 1/2 × 3.2 x V²

            V = 17 ÷ 1.6

Note, this is only the average ball speed, the speed of the ball at the time of release would be greater.

Answer:

Explanation:

The answer is Climate

Answer:

climate

Explanation:

Climate is defined as an area's long-term weather patterns. The simplest way to describe climate is to look at average temperature and precipitation over time.

Answer:

I would say A, I hope this helped ; >