A car with a mass of 833 kg rounds an unbanked curve in the road at a speed of 28.0 m/s. If the
radius of the curve is 105 m, what is the centripetal force exerted on the car?

Answer:

Must be aimed to the left

Explanation:

Coriolis effect deflects wind or any moving item which has no contact with earth and has substantial distance to cover and moving at a substantial altitude. Coriolis effect deflectd the object to the right in the northern hemisphere. Therefore, missile must be aimed to the left, to nullify the coriollis effect.

Answer:

B. Mass will not change based on location, while weight will change based on gravitational pull.

Answer:

B

Explanation:

took the test

Answer:

1.A

2.E

3.C

4.i think A

Explanation:

Answer:

7.7 N to left or -7.7 N

Explanation:

slippery floor means no frictional force

Equation for force

F = m * a , where F is force, m is mass in kg, and a is acceleration in m/s²

F = 3.5 * -2.2 m/s² = -7.7 N

Answer:

D the difference between two pressures​

Explanation:

A manometer is a device used to measure the difference between the pressure in a place. Manometer is solely used to determine gas pressure.

Explanation:

Given

acceleration (a) = 10 m/s²

mass (m) = 5 kg

Force (F) = ?

We know

F = m * a

= 5 * 10

= 50 Newton

The force is 50 N

Hope it will help :)

Answer:

[tex]\boxed {\boxed {\sf 50 \ Newtons }}[/tex]

Explanation:

Force can be found using the following formula.

[tex]F=m*a[/tex]

where F is the force, m is the mass, and a is the acceleration.

1. Define Values

We know the acceleration of the bowling ball is 10 m/s² and the mass is 5 kilograms.

[tex]a= 10 \ m/s^2 \\m= 5 \ kg[/tex]

2. Calculate Force

Substitute the values into the formula.

[tex]F= 5 \ kg * 10 \ m/s^2[/tex]

Multiply.

[tex]F= 50 \ kg*m/s^2[/tex]

[tex]F=50 \ N[/tex]

The force causing the ball to fall is 50 Newtons

The net force parallel to the plane is

∑ F = m g sin(29°) = m a

where

m = mass of the block

g = magnitude of the acceleration due to gravity, 9.8 m/s²

a = mag. of acceleration of the block

where we take the direction of the block's sliding down the plane to be positive. Then

a = g sin(29°) ≈ 4.8 m/s²

Answer:

15 KJ

Explanation:

The quantity of heat (Q) required is given as:

Q = mcΔθ + mL

where m is the mass of ice, c is its specific heat capacity, L is its specific latent heat andΔθ is the change in temperature.

Given: m = 20g, temperature of ice = 0[tex]^{o} C[/tex], specific heat capacity of water = 4200 J/kg[tex]^{o} C[/tex], latent heat of fusion of ice = 3.3 x 10^(5) J/kg, temperature of water = 100[tex]^{o} C[/tex].

Q = m (cΔθ + L)

   = 0.02(4200 x (100) + 330000)

   = 0.02(420000 + 330000)

  = 0.02 (750000)

Q = 15000

Q = 15000 Joules

Q = 15KJ

The quantity of heat needed to complete the conversion is 15 KJ.

Answer:

Material medium

compressions and rarefactions

Explanation:

A sound wave is an example of a mechanical wave. All mechanical waves require a material medium for propagation. The medium for the propagation of sound is air. This is the reason why, if you cover your mouth, it will be difficult for another person to hear whatever you are saying.

Sound is also a longitudinal wave. Longitudinal waves are described in terms of compressions and rarefactions. Compressions refer to areas where air molecules crowd together while rarefactions refer to areas where the air molecules spread out.

Answer:

Yes

Explanation:

This is because for the light to come on, electric current has to flow through it which is due to electron motion. As the electrons move through the light, it turns electrical energy to light energy, so the light comes on.

Answer:

the speed of the rocket is 45454.5455

Explanation: Because the speed formula is basically just distance/ divided by time all you need to do is divide 200,000 meters by 4.40 seconds. And then thus you will get the speed.

Answer:

45454.55 m/s

Explanation:

[tex]S=\frac{d}{t}[/tex]

= [tex]\\S=\frac{200000}{4.40}[/tex]

=45454.55 m/s

Answer:

Explanation:

You can approach an expression for the instantaneous velocity at any point on the path by taking the limit as the time interval gets smaller and smaller. Such a limiting process is called a derivative and the instantaneous velocity can be defined as.#3

For the special case of straight line motion in the x direction, the average velocity takes the form: If the beginning and ending velocities for this motion are known, and the acceleration is constant, the average velocity can also be expressed as For this special case, these expressions give the same result. Example for non-constant acceleration#1

Answer:

-scalar

Explanation:

-A scalar is any quantity that has a magnitude, but no direction

-quantities with no specified direction.

hope it helps:)

Explanation: The moon's gravity, combined with the waltz of Earth and the moon around their center of mass, forces the oceans into an oval shape, with two simultaneous high tides. ... If the moon were half its mass, then the ocean tides would have been correspondingly smaller and imparted less energy to it.

Answer:

5.1 x 10¹⁰s

Explanation:

Given parameters:

Decay constant  = 13.6 x 10⁻¹²/s

Unknown:

Half life of the element  = ?

Solution:

From the decay constant, we can find the half-life of this radioactive element.

  Half-life  = [tex]\frac{0.693}{decay constant}[/tex]  

     Half-life  = [tex]\frac{0.693}{13.6 x 10^{-12} }[/tex]   = 5.1 x 10¹⁰s

Answer:

I. Clockwise moment = 150 Nm

II. Anticlockwise moment = 400 Nm

III. 200 N

III. The anticlockwise moment.

Explanation:

From the question given above, we can obtain the answers to the questions as follow:

I. Determination of the clockwise moment.

Distance (d) = 1.5 m

Force (F) = 100 N

Clockwise Moment =?

Moment = Force × distance.

Clockwise moment = 100 × 1.5

Clockwise moment = 150 Nm

II. Determination of the anticlockwise moment.

Distance (d) = 2 m

Force (F) = 200 N

Anticlockwise Moment =?

Moment = Force × distance.

Anticlockwise moment = 200 × 2

Anticlockwise moment = 400 Nm

III. Determination of who will turn the sea saw.

Clockwise moment = 150 Nm

Anticlockwise moment = 400 Nm

Since the anticlockwise moment is greater than the clockwise moment, it therefore means that the anticlockwise moment will turn the sea saw.

1 3/10  because 130 is greater than 100 we have simplified this fraction even further to a mixed fraction.

Please provide positive integer to calculate.

Answer:

W = 5.76 J

Explanation:

Given that,

Charge 1, [tex]q_1=12\times 10^{-6}\ C[/tex]

Charge 2, [tex]q_2=8\times 10^{-6}\ C[/tex]

The distance between charges is 10 cm.

Initial distance = 10 cm = 0.1 m

Final distance = 10 cm - 4 cm = 6 cm = 0.06 m

We need to find the work done in bringing the 4 cm together.

We know that,

Work done = change in kinetic energy

[tex]W=kq_1q_2(\dfrac{1}{r_2}-\dfrac{1}{r_1})\\\\\text{Put all the values}\\\\W=9\times 10^9\times 12\times 10^{-6}\times 8\times 10^{-6}(\dfrac{1}{0.06}-\dfrac{1}{0.1})\\\\W=5.76\ J[/tex]

So, the required work done is 5.76 J.

Answer:

a

Explanation:

Answer:

Mass of the apple is 200g or 0.2 kg

Force acting on it will be,

Force= Mass× acceleration due to gravity

Force= 0.2×9.8 Newton= 1.96 Newton

Answer:

2 N

Explanation:

The question requires you to express the weight of the apple into Newton

1 kg = 10 N

200g = 200/1000 = 0.2 kg

1 kg = 10 N

0.2 kg = ?

0.2 * 10 = 2 N

Answer:

Explanation:

Answer:

C. reflection

Explanation:

reflection occurs when a wave strikes an object and bounces off of it

When a wave strikes an object and bounces off, it is called reflection.

Hence, the correct option is C.

This is similar to what happens when sound waves strike a surface and bounce back, resulting in an echo.

Reflection occurs when a wave encounters a boundary or an obstacle and changes direction, returning back into the medium it came from.

The angle of incidence (the angle at which the wave strikes the surface) is equal to the angle of reflection (the angle at which the wave bounces off the surface).

Therefore, When a wave strikes an object and bounces off, it is called reflection.

Hence, the correct option is C.

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Answer:

C. 49 m/s^2

Explanation:

1 G = 9.81 m/s^2

so 5 * 9.81 = 49.05

or C. 49 m/s^2

Answer:

The tension in the rope is 10 N

Explanation:

The Force Vector

Like all vectors, the force has a magnitude and direction. Vectors can be decomposed into two perpendicular components on both axes.

The tension in the rope (F) can be calculated by using vector decomposition as follows.

The figure included below shows a force F which horizontal component is known to have a value of Fx= 5 Nw. The angle formed by the force and its horizontal component is 60°.

We can use the trigonometric ratio called the cosine to find the magnitude of F as follows:

[tex]\displaystyle \cos 60^\circ = \frac{5}{F}[/tex]

Solving for F:

[tex]\displaystyle F = \frac{5}{\cos 60^\circ}[/tex]

[tex]\displaystyle F = \frac{5}{\frac{1}{2}}[/tex]

Thus, F = 10 N

The tension in the rope is 10 N

Answer:

b) normal

Explanation:

The angle of refraction (transmission) Θt is the angle between the refracted ray and the normal N'. 2. When a light ray hits a surface normally, the angle between the incident ray and the normal is 0, so Θi = 0. Since the angle of reflection equals the angle of incidence, Θr= 0.

The angle of refraction is the angle between the refracted ray and the normal, which is option B.

When light travels from one medium to another medium with a different refractive index, it changes direction.

The angle of refraction is the angle between the refracted ray and the normal, which is an imaginary line perpendicular to the boundary between the two media at the point of incidence. The incident ray is the incoming ray of light that strikes the boundary between the two media.

The medium refers to the substance through which light is passing, and the boundary is the surface separating the two media.

However, the angle of refraction is not related to the incident ray or the boundary, but rather the norm.

Thus, the correct answer would be an option (B) normal.

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Explanation:

The terms involved in S = ut + 1/2at²

S = displacement

u = initial velocity

a = acceleration

t = time.

Hope it will help :)

Answer:

the distance traveled or displacement (s) of an object using its initial velocity (u), acceleration (a), and time (t) traveled.

Answer:

a) T=549.36N Upwards

b) T=448.56N Upwards

c) T=650.16N Upwards

Explanation:

The very first thing we can do to solve this problem is to draw a free body diagram we can use to analyze the situation (see attached picture).

On the diagram we can see there are only two forces acting on the object: the tension of the rope and the weight of the object itself.

a)

Since the object is moving at a constant speed, this means that its acceleration will be zero. So we can do a sum of forces like this:

[tex]\sum F=0[/tex]

T-W=0

T=W

T=mg

[tex]T=(56kg)(9.81m/s^{2})[/tex]

T=549.36N upwards

b)

For part b, since the object is accelerating downwards, we wil say that it's acceleration is negative, so [tex]a=-1.8m/s^{2}[/tex]

so we can do a sum of forces again:

[tex]\sum F=ma[/tex]

so

T-W=ma

T=ma +W

T=ma+mg

T=m(a+g)

and now we substitute:

[tex]T=(56kg)(-1.8 m/s^{2}+9.81 m/s^{2})[/tex]

which yields:

T=448.56N upwards (in this particular case, the tension always goes upwards)

c)

Since the object is moving upwards, we can say that its acceleration will be positive, so [tex]a =1.8m/s^{2}[/tex]

we can take the solved equation we got on the previous part of the problem, so we get:

T=m(a+g)

[tex]T =(56kg)(1.8 m/s^{2}+9.81 m/s^{2})[/tex]

which yields:

T=650.16N upwards

The tension force in the rope when the object moves upward at a constant velocity is 548.8 N.

The tension force in the rope when the object accelerates downward at a constant acceleration is 448 N.

The tension force in the rope when the object accelerates upward at a constant acceleration is 649.6 N.

The given parameters:

The tension force in the rope when the object moves upward at a constant velocity;

T = ma + mg

at constant velocity, a = 0

T = mg

T = 56(9.8)

T = 548.8 N

The tension force in the rope when the object accelerates downward at a constant acceleration of 1.8 m/s².

T = mg - ma

T = m(g - a)

T = 56(9.8 - 1.8)

T = 448 N

The tension force in the rope when the object accelerates upward at a constant acceleration of 1.8 m/s².

T = mg + ma

T = m(g + a)

T = 56(9.8 + 1.8)

T = 649.6 N

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Answer:

True

Explanation:

Electrons can be transferred between materials as in chemical reactions solid substances lose electrons while other elements gain electrons to balance the electrons in reaction.It occurs by conduction,polarization and friction.