9. An astronaut weighs 500 Newtons on Earth and 25
newtons on asteroid X. The acceleration due to
gravity on asteroid X is approximately
A) 1 m/s²
C) 0.2 m/s²
B) 2 m/s²
D) 0.5 m/s²

According to special relativity, one can travel at increased rates. However, this is only possible when moving at very high speeds approaching the speed of light. When an object moves at high speeds, the time slows down, and the length of the object appears to be shortened.

These observations are known as time dilation and length contraction. Time dilation refers to the difference in the elapsed time measured by two observers, where one is stationary, and the other is moving at a constant velocity relative to each other. The faster the moving observer, the slower time appears to be for them. Length contraction, on the other hand, refers to the phenomenon where an object appears to be shorter in length when it's moving at high

This effect is more noticeable as the speed of the object approaches the speed of light. As a result, traveling at very high speeds can allow one to cover great distances in less time, which can be used for space exploration and other scientific research. However, it's worth noting that the effects of relativity are only noticeable at very high speeds, which are currently impossible to achieve with our current technology.

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Answer:

1.Vector are quantities which have both magnitude and direction

Scalar are physical quantities which only have magnitude

Distance is Scalar

Displacement is Vector

2. Scalar

3. Vector

Distance: The total length covered by a moving object irrespective of the direction of motion(only magnitude and no direction)

Displacement: The distance measured in a straight line(linear distance) and in a specific direction (both magnitude and direction)

the 4th & 5th question im unsure, i apologize about it

Heavy, more massive nuclei contain more neutrons than protons to balance the repulsive force between the protons in the nucleus. As the number of protons increases, the electric repulsion between them increases, which can cause the nucleus to become unstable.

To counterbalance this repulsion, neutrons are added to the nucleus, as they do not carry any charge and can provide additional nuclear binding energy that helps hold the nucleus together. This results in a higher neutron-to-proton ratio in heavy nuclei, which helps to stabilize the nucleus against the electrostatic repulsion between the protons. This balance of protons and neutrons is crucial for the stability and longevity of the nucleus, which can determine its decay properties and potential for nuclear reactions.

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Answer:

Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.

Answer: They give  you a portion of the thing its fighting so it gets your cells use to it so they can fight it off easily

Explanation:

Answer:

5 m/s

Explanation:

Mass of the boy + scooter system =  35 kg

Kinetic Energy =  437.6 J

437.6 = \(\frac{1}{2} 35 {v}^2\)

25.0057143 = \(v^{2}\)

v = 5 m/s

The concept of race as a socio-historical construct highlights the importance of understanding the social, political, and economic contexts in which race is created and maintained.

According to Michael Omi and Howard Winant, in "Racial Formations," race is a socio-historical concept that is constructed through the intersection of cultural, political, and economic forces.

In this book, they argue that race is not an immutable, biologically determined characteristic of individuals or groups but rather a social construct that is created and maintained through systems of power and inequality.

The authors illustrate how race is constructed through examples from different historical periods and social contexts.

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Answer:

A. Energy streaming through space toward Thomas

Explanation:

its correct did it on a test

Answer:

A simple pulley is a wheel with a rope that allows you to pull one end and have it lift whatever is on the other end. A modern, common example of this is a crane, often used in construction.

Explanation:

Answer:

rickrickrick

Explanation:

rick n morty

Plants that are adapted to survive in hot and dry climates are usually found in desert biomes. Deserts are characterized by extremely low levels of precipitation and high temperatures, making them a challenging environment for plant life. However, plants in these areas have developed various adaptations to cope with the harsh conditions.

One of the key adaptations of desert plants is their ability to conserve water. They often have specialized features such as deep root systems that allow them to access water from deep underground sources. Some desert plants also have reduced leaves or modified leaf structures such as spines or hairs to minimize water loss through transpiration.

Additionally, many desert plants have evolved mechanisms to store water. They may have fleshy stems or leaves that can store water during the rainy season, allowing them to survive long periods of drought. Examples of such plants include cacti and succulents.

In addition, desert plants often have thick waxy coatings, known as cuticles, on their leaves or stems that help reduce water loss through evaporation.

In terms of plant diversity, desert biomes can support a variety of plant species. Examples of desert plants include the Joshua tree, saguaro cactus, barrel cactus, yucca, and various types of shrubs and grasses.

Overall, desert biomes are home to plants that have developed remarkable adaptations to withstand hot and dry conditions. These adaptations allow them to efficiently use limited water resources and survive in environments that would be inhospitable to many other plant species.

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Answer:

1.5 A

Explanation:

V =I.R

18 = I × 12

I = 18/12

= 3/2 = 1.5 A

The net vertical force on the caboose (C) is

∑ F[v, C] = F[n, C]  - (1.4 kg) g = 0

where F[n, C] is the magnitude of the normal force exerted by the track on the caboose; so we have

F[n, C] = (2.3 kg) g = 13.72 N

which means the coefficient of kinetic friction µ between the caboose and the track is

F[f, C] = 0.46 N = µ (13.72 N)   ⇒   µ = (0.46 N) / (13.72 N) ≈ 0.034

and presumably the coefficient is the same for the locomotive.

The net vertical force on the locomotive (L) is

∑ F[v, L] = F[n, L] - (2.3 kg) g = 0

where F[n, L] is the magnitude of the normal on the locomotive, so that

F[n, L] = (2.3 kg) g = 22.54 N

and so the locomotive is opposed by a frictional force with magnitude

F[f, L] = µ (22.54 N) ≈ 0.76 N

Taking the locomotive and caboose together, the net horizontal force on the system is

∑ F[h] ≈ - F[f, C] - F[f, L] + F[engine] = (2.3 kg + 1.4 kg) (3.1 m/s²)

Solve for F[engine] :

F[engine] ≈ (3.7 kg) (3.1 m/s²) + 0.46 N + 0.76 N ≈ 13 N

Answer:

Option d (108,000 J) is the correct answer.

Explanation:

The given values are:

Power,

P = 120 Watts

Time,

t = 15 min.

i.e.,

 = 900 sec

As we know,

⇒ \(P=\frac{W}{t}\)

So,

⇒ \(W=P\times t\)

On substituting the given values, we get

⇒      \(=120\times 900\)

⇒      \(=108,000 \ J\)

The largest potential difference that can be applied across the capacitors without damaging them is 150.0 V.

To determine the largest potential difference that can be applied across the capacitors without damaging them, we need to consider the breakdown voltage of each capacitor and the total potential difference applied.

Since each capacitor will break down if the potential across it exceeds 30.0 V, we can use this as our limit. Therefore, the potential difference across each capacitor must be less than or equal to 30.0 V.

Using Kirchhoff's laws, we can determine the total potential difference applied across the capacitors as:

vab = V1 + V2 + V3 + V4 + V5

where V1, V2, V3, V4, and V5 are the potential differences across each capacitor.

To find the largest value of vab that satisfies the breakdown voltage limit, we can set each potential difference equal to 30.0 V:

vab = 30.0 V + 30.0 V + 30.0 V + 30.0 V + 30.0 V

vab = 150.0 V

Therefore, the largest potential difference that can be applied across the capacitors without damaging them is 150.0 V.

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Answer:10

Explanation: if you look it has a 170 but some people have 70 if you have 170 then it will be 10 if you have a 70 then it will be 110 if I'm right then Yw

Answer:

10

Explanation:

i took the quiz xoxo

The mousetrap model demonstrates a chain reaction, similar to fission, where the release of energy from one reaction triggers subsequent reactions.

In the mousetrap model, the initial trigger sets off a chain reaction where each reaction leads to multiple subsequent reactions. Similarly, in nuclear fission, the release of energy from one nucleus splitting triggers the splitting of neighboring nuclei, resulting in a self-sustaining chain reaction.

While the specific mechanisms and energy scales differ, the concept of a chain reaction in the mousetrap model provides a simplified analogy for understanding the basic principle of energy release and propagation in fission reactions.

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The bottleneck event of the plants in an area results in secondary succession.

A bottleneck is an event that drastically reduces the population size of an organism. The bottleneck may be caused by various events, such as an environmental disaster, the hunting or habitat destruction that results in the deaths of organisms.

Secondary succession is a type of ecological succession in which plants and animals recolonize a habitat after a major disturbance such as a devastating flood, wildfire, landslide, lava flow, or human activity e.g., farming or road or building construction.

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Answer:

Therefore, the magnitude of the acceleration of the particle at the instant when its velocity is zero is approximately 18.258 m/s².

Explanation:

To find the magnitude of acceleration at the instant when velocity is zero, we need to differentiate the given velocity equation with respect to time (t) to obtain the acceleration equation.

Given:

Velocity equation: v(t) = 22 - 3.8t^2

Differentiating the velocity equation with respect to time, we get:

a(t) = d(v(t))/dt = -2 * 3.8t

To find the magnitude of acceleration at the instant when velocity is zero, we need to solve for t when v(t) = 0.

0 = 22 - 3.8t^2

3.8t^2 = 22

t^2 = 22/3.8

t^2 ≈ 5.789

Taking the square root of both sides, we find:

t ≈ √(5.789)

t ≈ 2.403

Now we can substitute this value of t into the acceleration equation to find the magnitude of acceleration at that instant:

a(t) = -2 * 3.8 * 2.403

a(t) ≈ -18.258

Therefore, the magnitude of the acceleration of the particle at the instant when its velocity is zero is approximately 18.258 m/s².

Answer:

Tectonic movement is the primary cause of earthquake.

Multiple shadow regions can be observed in the wall behind the keyhole of a door. Option B is correct.

It is a phenomenon that happens when a wave (Light) is passed through a narrow aperture or a sharp edge, the light bends at the edges.

The light bends at the edges because the sharp edges have less diameter than the wavelength of light.

Therefore, multiple shadow regions can be observed in the wall behind the keyhole of a door.

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Answer: B) It spreads out into multiple shadow regions.

Explanation:

I got it right on edge

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

m is the mass

f is the force

From the question we have

\(a = \frac{70}{7} = 10 \\ \)

We have the final answer as

Hope this helps you

A focal ray from an object, after passing through a converging lens, proceeds in the following direction:a) The ray passes through the focal point F .

A converging lens, also known as a convex lens, focuses incoming parallel rays towards a single point known as the focal point. When a focal ray, which is a ray parallel to the principal axis, enters the converging lens, it refracts in such a way that it passes through the focal point (F) on the other side of the lens.This behavior is due to the lens's shape, which causes the light to bend as it passes through. The focal length, the distance from the lens to the focal point, is an important parameter for determining the behavior of a converging lens. In summary, a focal ray from an object, after passing through a converging lens, proceeds in the direction of the focal point F.

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Answer:

I think is 3 I am not sure

Answer:

200 Newtons

Explanation:

20 kg x 10 m/s squared

Answer:

The pressure at the bottom of the river is less than that at the bottom of the lake.

Explanation:

From Bernoulli's equation, the pressure difference is given by

ΔP = ρgΔh + ρ(v₂² - v₁²)/2 where ρ = density of water, g = acceleration due to gravity, Δh = depth, v₁ = velocity at top, v₂ = velocity at bottom

For the lake, v₁ = v₂, since the velocity at the top and bottom are the same. So,

ΔP₁ = ρgΔh + ρ(v₁² - v₁²)/2 = ρgΔh + 0 = ρgΔh

P₂ - P₁ = ρgΔh

P₂ = P₁ + ρgΔh

For the river, v₁ < v₂, since the velocity at the top of the river is greater than at the bottom.

So,

ΔP₂ = ρgΔh + ρ(v₂² - v₁²)/2.

Since  v₁ < v₂, ρ(v₂² - v₁²)/2 will be negative,

So,

ΔP₂ = ρgΔh - ρ(v₂² - v₁²)/2.

Since ρ(v₂² - v₁²)/2 is negative, making ΔP less than that in the lake.

So, ΔP₂ = ΔP₁ -  ρ(v₂² - v₁²)/2.

ΔP₂ = P₃ - P₁

P₃ - P₁ = P₂ - P₁ -  ρ(v₂² - v₁²)/2.

P₃ = P₂ - ρ(v₂² - v₁²)/2.

where P₃ = pressure at bottom of the river and P₂ = pressure at bottom of the lake and P₁ = atmospheric pressure at top of river and lake respectively.

Since the factor ρ(v₂² - v₁²)/2 is removed from the pressure at the bottom of the lake, the pressure at the bottom of the river is therefore less than that at the bottom of the lake.

Rectilinear motion, as used in the context of a car traveling down the highway, refers to the car's motion in a straight path with no notable lateral or angular deviations.

Rectilinear motion is the term used to describe motion in which an object travels in a straight line. Its distinctive feature is that the displacement of the object only occurs in one dimension, which is frequently depicted as a straight line. Although the item in rectilinear motion can modify its speed and acceleration, its route will always be straight and unidirectional.

Therefore, it suggests that the car maintains a consistent course and speed, ignoring slight deviations brought on by things like traffic or the state of the road while driving down the highway in a rectilinear motion.

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Given:

Speed of the toy car max speed = 15 m/s

Time taken before the battery dies = 30 minutes.

Let's find how far the car went.

To find the distance the car travelled, aply the formula:

Where:

Speed = 15 m/s

time = 30 min

Convert the speed to meters per hour

Convert the time to hour.

Where:

1 hour = 60 mins = 3600 seconds

Thus, we have:

• Speed in m/h:

• Time in hour:

To find the distance, we have:

Therefore, the toy car travelled 27000 meters.

ANSWER:

27000 meters.

Answer:

a. Winter.

Explanation:

Answer:

Winter

Explanation:

Answer:

the car’s final displacement is 60 m

Explanation:

Given;

initail velocity of the car, u = 0

acceleration of the car, a = 0.8 m/s²

time of motion, t = 10 s

The first displacement of the car:

\(x_1 = ut + \frac{1}{2} at^2\\\\x_1 = 0 + \frac{1}{2} (0.8)(10)^2\\\\x_1 = 40 \ m\)

The second displacement of the car;

acceleration, a = 0.4 m/s²,   time of motion, t = 10 s

\(x_2 = ut + \frac{1}{2} at^2\\\\x_2 = 0 + \frac{1}{2} (0.4)(10)^2\\\\x_2 = 20 \ m\)

The final displacement of the car;

x = x₁  +  x₂

x = 40 m  +  20 m

x = 60 m

Therefore, the car’s final displacement is 60 m

Answer:

240N

Explanation:

The formula for force is F=mass×acceleration.

Therefore, Force= 120×2= 240N