A block of cheese is pulled on by a string and slides to the right along a rough surface.
What is the correct free body diagram for the block of cheese?

Answer:

R = 98304.75 m = 98.3 km

Explanation:

The density of an object is given as the ratio between the mass of that object and the volume occupied by that object.

Density = Mass/Volume

Now, it is given that the density of Earth has become:

Density = 1 x 10⁹ kg/m³

Mass = Mass of Earth (Constant) = 5.97 x 10²⁴ kg

Volume = 4/3πR³ (Volume of Sphere)

R = Radius of Earth = ?

Therefore,

1 x 10⁹ kg/m³ = (5.97 x 10²⁴ kg)/[4/3πR³]

4/3πR³ = (5.97 x 10²⁴ kg)/(1 x 10⁹ kg/m³)

R³ = (3/4)(5.97 x 10¹⁵ m³)/π

R = ∛[0.95 x 10¹⁵ m³]

R = 98304.75 m = 98.3 km

Answer:

The cell theory

Explanation:

Answer:

The cell theory

Explanation:

Answer:

w_bear = 7175.95 N ,   m = 732.24 kg

Explanation:

Let's analyze the situation a bit, the ice block is in equilibrium with the thrust given by Archimedes' law that is directed towards the bottom, the weight of the ice and the weight of the bear.

           B -W_ice - w_bear = 0

           w_bear = B - W_ice

The thrust is given by

           B = ρ g V

           B = 1025 9.8 6.78

           B = 68 105.1 N

Note that we use the total volume of the block since the problem indicates that it is submerged.

The weight of the ice is

           W_ice = m g

the density is

          ρ_ice = m_ice / V

          m_ice = rho_ice V

we substitute

          W_ice = ρ_ice g V

           W_ice = 917 9.8 6.78

           W_ice = 60929.15 N

we substitute in the first equation

             w_bear = 68105.1 - 60929.15

              w_bear = 7175.95 N

the mass of this bear is

               w_bear = m g

               m = w_bear / g

               m = 7175.95 / 9.8

               m = 732.24 kg

Answer:

B. students have to depend on one another to learn the required information.

Explanation:

It's kinda like puzzles having pieces and you use them to put together. So they can use this information to figure out what they're trying to solve with the information. -I hope this helped!

having a plan and listening to your coach

Answer:

Since there is no motion yet, there is no kinetic energy. This means that the work needed to get up the hill is the potential energy at the top. Once you have coasted down the hill and are at the bottom, all of the energy is kinetic.

Explanation:

.

Answer:The amount of energy carried by radio waves is enough to provide images but not enough to kill cells.

Explanation:

The reason of MRI should be useful is that the energy amount that should be carried out via the radio waves.

It refers to the medical imaging technique that should be applied in the radiology to create the pictures with respect to the anatomy and the process of physiological with related to the body.

Also, it is applied for strong the magnetic field, gradient related to the magnetic field, also the radios waves for produce image in the body organs.

Learn more about wave here: https://brainly.com/question/12734041

Answer:

C: The color of the light that is reflected off a substance's surface

D: The amount of mass per unit volume

Explanation:

just took this!

Options C and D are correct.

C: The color of the light that is reflected on a substance’s surface

D: The amount of mass per unit volume.

Physical and chemical features can be used to classify matter. The matter is defined as something that occupies space and has mass. Solid, liquid, and gaseous are the three states of matter.

C: The color of the light that is reflected on a substance’s surface

If the light is completely absorbed, the thing appears black; if the light is completely reflected, the object appears white. The wavelengths of light that a material absorbs determine its color.

Hence it is an important property of matter.

D: The amount of mass per unit volume.

Density is defined as the mass per unit volume.it is denoted by ρ. It is the most important parameter to define the property of a matter.

Density shows the compactness of matter. it is calculated per unit volume. The density is used to find the space for the material that has to be filled.

Due to the above reasons options, C and D are correct.

To learn more about the matter refer to the link;

https://brainly.com/question/4513444

Answer:

Using the parallel axis theorem

Explanation:

We note the angular speed and also the systems energy. Using these information we calculate the moment of inertia of irregular shaped body.

Io = 2E/w²

When we have moment of inertia of irregular shaped body, we can then use parallel axis theorem to solve for the moment of inertia of the body about the given axis.

I = Io + md²

Solution :

Distance between the Earth and the moon, D = [tex]$3.84 \times 10^8 \ m$[/tex]

Radius of the earth, r = [tex]$6.37 \times 10^6 \ m$[/tex]

Gravitational force on the near side of the moon, [tex]$F_N = \frac{GM_m m}{(D-r)^2}$[/tex]    ......(1)

Gravitational force on the far side of the moon, [tex]$F_F = \frac{GM_m m}{(D+r)^2}$[/tex] ..............(2)

where, [tex]$M_m$[/tex] = mass of moon

            m = mass of the near side and far side respectively (both are taken as equal)

Therefore,

[tex]$\frac{F_N-F_F}{F_N}\times 100 = \frac{\frac{GM_m m}{D-r}^2-\frac{GM_m m}{D+r}^2}{\frac{GM_m m}{D-r}^2} \times 100 $[/tex]

                        [tex]$=1 - \frac{(D-r)^2}{(D+r)^2} \times 100$[/tex]

                       [tex]$=1- \left(\frac{1-\frac{r}{D}}{1+\frac{r}{D}}\right)^2 \times 100$[/tex]

                       [tex]$= 1- \left(\frac{0.98}{1.02}\right)^2 \times 100$[/tex]

                       = 7%

Hence, correct option is (b) About 7% greater

Answer:

Extensive property

Explanation:

Answer:

Extensive property

Explanation:

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.

Answer:

Mass is constant everywhere,

But weight is different,

If earth g = 10 then moon's is 1.6666667

Now billie's weight in moon is 41.6667

Answer:

3m/s

Explanation:

Given parameters:

Initial speed  = 2m/s

Acceleration  = 0.5m/s²

Time  = 2s

Unknown:

Final speed  = ?

Solution:

To solve this problem, we apply the right motion equation;

     V  = U + at

V is the final speed

U is the initial speed

a is the acceleration

t is the time

      V = 2  + (2 x 0.5)

      V = 2 + 1

      V = 3m/s

The S wave vibrates both side to side and up and down whereas P wave is the first to arrive during an earthquake

During the eathquake, two types of seismic waves are generated , P wave and S wave.

The S waves produces vibrations to the ground in a shearing force perpendicular to the direction of propagation of the wave, moving the ground up and down or from side to side. S waves are called secondary waves because arrive after P waves.

The P waves is analogous to longitudinal vibrations, producing vibrations to the ground to compress and expand in the direction of propagation f the wave. They are called primary waves because they are the first type of wave to arrive at seismic recording stations.

Learn more about seismic waves:

https://brainly.com/question/13062627?referrer=searchResults

Answer:

i got it right so chillllll :)

Explanation:

Select the correct responses to the questions from the drop-down menus.

Which type of wave vibrates both side to side and up and down?

✔ S wave

Which type of wave is the first to arrive during an earthquake?

✔ P wave

Which type of wave may make the ground roll?

✔ surface wave

Answer:

720 m

Explanation:

Taking the upward direction as positive

We are given:

Initial vertical velocity of the cannonball = 120 m/s

Vertical acceleration of the cannonball = -10 m/s²

Final velocity of the Cannonball = 0 m/s [at the maximum height, the velocity of the ball will be 0 m/s for a moment]

Maximum height of the ball:

v² - u² = 2as                                 [Third equation of motion]

replacing the variables (s is the maximum height)

(0)² - (120)² = 2(-10)(s)

-14400 = -20s

s = -14400 / -20                           [Dividing both sides by -20]

s = 720 m

Hence, the maximum height of the Cannonball fired vertically at a velocity of 120 m/s is 720 m

Answer:

3311N

Explanation:

r = radius = 600m

V = speed = 150m/s

Mass = weight = 70kg

The weight of pilot when calculated due to circular motion

W = tv

Fv = mv²/r

Fv = 70x150²/600

Fv = 79x22500/600

= 15750000/600

= 2625N

Real Weight of the pilot = m x g

= 70 x 9.8

= 686N

The apparent Weight is calculated by

Mv²/r + mg

= 2625N + 686N

= 3311 N

Therefore the apparent Weight is 3311N

Answer:

9. qulitative(spell check)

10. false

11. true

Explanation:

Answer:

natural motion and violent motion

Explanation:

Answer:

Triangle law of vector addition is one of the vector addition laws. Vector addition is defined as the geometrical sum of two or more vectors as they do not follow regular laws of algebra. The resultant vector is known as the composition of a vector

Explanation:

if it helps great if that still doesn't help thats the best i can do

Answer:

D. ? Its the only one talking about color

Answer:

0.00

Explanation:

Answer:

approximately 13.77 m

Explanation:

We use the kinematic equations for the horizontal motion which is a uniform non-accelerated motion, and with initial velocity equal to 16 * cos(55). This is described by the equation:

[tex]x=16 * cos(55^o) * t = 9.177 * t[/tex]

then at t = 1.5 seconds, the covered distance becomes:

x = 9.177 * (1.5) = 13.7655  m

Round the answer to the number of decimals that the problem asks.

Answer:

p_{f} = 6 m / s

Explanation:

We can solve this exercise using conservation of momentum. For this we define a system formed by the two balls, so that the forces during the collision have been intense and the moment is preserved

Initial instant. Before the crash

        p₀ = m v +0

Final moment. Right after the crash

        [tex]p_{f}[/tex] = (m + m) v_{f}

how the moment is preserved

        p₀ = p_{f}

       m v = 2 m v_{f}

       v_{f} = v / 2

we calculate

       v_{f} = 12/2

       p_{f} = 6 m / s

Answer: Motion

Explanation:

Answer:

The particles that make up the pan will speed up

Explanation:

Answer:

The magnitude of the force between the two parallel wires is 0.0111 N.

Explanation:

Given;

length of the two parallel wires, L = 42 m

distance between the two wires, r = 0.03 m

current in both wires, I₁, I₂ = 6.3 A

Therefore, the magnitude of the repulsive force between the two parallel wires is given by;

[tex]F = \frac{\mu_0 I_1I_2l}{2\pi r}\\\\where;\\\mu_0 \ is \ permeability \ of \ free \ space = 4\pi *10^{-7} \ T.m/A \\\\F = \frac{(4\pi *10^{-7})(6.3)^2(42)}{2\pi (0.03)}\\\\F = 0.0111 \ N[/tex]

Therefore, the magnitude of the force between the two parallel wires is 0.0111 N.

Answer:

v = 6.3 m/s

Explanation:

       [tex]E_{i} = K_{i} + U_{i} = 0 + U_{i} (1)[/tex]

       [tex]m*g* h = 2*\frac{1}{2}*m*v^{2} (2)[/tex]

       [tex]v = \sqrt{g*h} =\sqrt{9.8m/s2*4.0m} = 6.26 m/s (3)[/tex]