How does a resistor affect an electrical circuit?

Answer:

A.  Car #1 has 2-times the momentum as Car #2

Explanation:

Momentum is defined as the product of mass and velocity:

[tex]P = mv[/tex]

where,

P = Momentum

m = mass

v = velocity

FOR CAR # 1:

m = 1000 kg

v = 10 m/s

Threfore,

[tex]P_1 = (1000\ kg)(10\ m/s)\\P_1 = 10000\ N.s[/tex]

FOR CAR # 2:

m = 500 kg

v = 10 m/s

Threfore,

[tex]P_2 = (500\ kg)(10\ m/s)\\P_2 = 5000\ N.s[/tex]

Dividing both momentums:

[tex]\frac{P_1}{P_2} = \frac{10000\ N.s}{5000\ N.s}\\\\P_1 = 2P_2[/tex]

Therefore, the correct option is:

A.  Car #1 has 2-times the momentum as Car #2

Answer:

One object has a large mass, and the objects are close together.

Answer:

76.36km

Explanation:

Average speed=Total distance covered ÷ Total

time taken

Distance=Time * speed

3*80=240km

2*90=180km

Total distance covered =240+180=420km

Total time taken=3+1/2 an hour+2=5 1/2 hours

Average speed =420km ÷5 1/2 hours

=76.36km/h

Answer:

well i guess i can try...

Explanation:

Volcanoes are a dangerous natural occurance that can greatly effect any ecosystems. There are various effects of volcanoes such as, lava flows, volcanic landslides, mud-flows, and ash flows, which generally result in total obliteration of any ecosystem in their path, they can also have long term beneficial effects to the environment.  One of these long term effects are, the creation of some of the most nutrisous, and fertile soil on earth, causing healthy plants to grow.

Answer:

Space radiation is made up of three kinds of radiation: particles trapped in the Earth's magnetic field; particles shot into space during solar flares (solar particle events); and galactic cosmic rays, which are high-energy protons and heavy ions from outside our solar system.

Explanation:

Answer: according to https://www.doe.virginia.gov When light strikes translucent materials, only some of the light passes through them. The light does not pass directly through the materials. ... Opaque objects block light from traveling through them. Most of the light is either reflected by the object or absorbed and converted to thermal energy.

Explanation:

Answer:

V = 5.83 m/s

Explanation:

Given that,

Mass of a ball of a clay, m = 2 kg

Initial speed of the clay, u = 35 m/s

Mass of a box, m' = 10 kg

Initially, the box was at rest, u' = 0

We need to find the velocity of the box after the collision. Let V be the common speed. Using the conservation of momentum to find it.

[tex]mu+m'u'=(m+m')V\\\\V=\dfrac{mu+m'u'}{(m+m')}\\\\V=\dfrac{2\times 35+10\times 0}{2+10}\\\\V=5.83\ m/s[/tex]

So, the velocity of the box after the collision is equal to 5.83 m/s.

Glass: inorganic

Water: inorganic

Sugar: organic

Salt: depends what type of salt it is but most likely inorganic

Olive Oil: organic

Answer:

uaa,uag,uga

Explanation:

Answer:

I'm not sure but it may be d.

Answer:

C

Explanation:

It can only move if unbalanced

Answer:

In a chemical reaction, an iron atom became the ion which means that iron atom by loosing two electrons from its valence shell has oxidized into positively charged ion

Explanation:

Answer:

150 N= 15 or 150 N= 1.1

Explanation:

What I did was subtract 165kg and 150 N and I divided it too but I got 1.1 so yuhh

If a rocket of mass 117 kg is launched with a velocity of 800 m/s, so, the height is 32000m.

Kinetic energy is defined as the energy possessed by an object due to its motion that can be transferred between objects and converted into other forms of energy. It can be expressed as:

[tex]K.E.= 1/2 mv^2[/tex]

For above given information,

m is the mass which is 117kg

v is the velocity which is 8000m/s

So,

K.E.= [tex]1/2 (117)* (8000)^2[/tex]= [tex]3.744*10^7[/tex] Joules

So, we assume kinetic energy is equal to gravitational potential energy

G.P.E.= mgh

where, g is the gravitational strength which is 10N/kg for Earth

So,

[tex]3.744*10^7= (117).(10). h\\h= 3.744*10^7/1170\\h= 32000m[/tex]

So, the  rocket of mass 117 kg is launched with a velocity of 800 m/s, so, the height is 32000m.

Learn more about Kinetic energy, here:

https://brainly.com/question/26472013

#SPJ1

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

If a rocket of mass 117 kg is launched with a velocity of 800 m/s, how high does it rise?

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Answer:

Lightning is an electrical discharge caused by imbalances between storm clouds and the ground, or within the clouds themselves. Most lightning occurs within the clouds. ... This heat causes surrounding air to rapidly expand and vibrate, which creates the pealing thunder we hear a short time after seeing a lightning flash.

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Brainliest?

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Answer:

Lightning can be explained in terms of charges produced due to rubbing. During a thunderstorm, the air currents move upwards and the water droplets move downwards. And this caused due to the separation of charge due to this vigorous motion.

Explanation:

Answer:

8.70 s

Explanation:

Given (in the y direction):

v₀ = 2.38 m/s

v = 0 m/s

a = 0.310 sin (-62.0°) m/s²

Find: t

v = at + v₀

0 m/s = (0.310 sin (-62.0°) m/s²) t + (2.38 m/s)

t = 8.70 s

Answer:

True

Explanation:

Answer:

I think B is the answer

Explanation:

I think this cause a maid always cleans the house and might be awake at night

Answer:

mass kg velocity m/s kinetic energy j

they are made up of rock and gas

Answer:

Hydrogen and Helium. 75% Hydrogen and 25% Helium.

Explanation:

Answer:

1.  haboob

2. dust storm

3. haboob

4. sandstorm

Explanation:

just did the assignment

Answer:

G. it enables people to use pots and pans made of metal to cook food

Explanation:

Metals are known to be substances with a relative high melting point, which means that it takes a very high temperature to melt them. As used in this question, copper (Cu) and iron (Fe) at metallic elements that have high melting points.

One advantage of this property based on the options provided is that "it enables people to use pots and pans made of metal to cook food". This is because cooking food requires subjecting them to a constant temperature from a heat source e.g cooker or stove.

The material used to hold the food being cooked must possess a very high melting point to withstand the heat, hence, the importance of these metallic substances. Most pots and pans are made of steel, an alloy of iron, hence, they have high melting point.

Answer:

Yes, that is correct.

Answer:

his average velocity is

[tex]v = \frac{19300}{1380} = 13.9855(m \div s)[/tex]

Answer:

223.25 [tex]$\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$[/tex]

Explanation:

The thermal conductivity of an object is defined as the measure or the ability of the object to transfer heat or conduct heat through its body.

In the context, the thermal conductivity of the material is given as

[tex]$=129 \text{ Btu ft}^{-1}\text{h}^{-1}^\circ\text{F}^{-1}$[/tex]

And it is given that :

1 Btu = 1055 J

1 ft = 0.3048 m

[tex]$1^\circ F = \frac{5}{9}^\circ C$[/tex]

We know that 1 h = 3600 s

So the thermal conductivity of the material in [tex]$\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$[/tex] is  :

Thermal conductivity :

[tex]$=\frac{129 \text{ Btu}}{1 \text{ ft }\times \text{1 h}\times 1^\circ\text{F}}$[/tex]

[tex]$=\frac{129 \times 1055 \text{ J}}{0.3048 \text{ m} \ \times 3600 \text{ s}\ \times \frac{5}{9}^\circ \text{C}}$[/tex]

=  223.25 [tex]$\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$[/tex]

Answer:

magnetic force

Explanation:

when some one gets charged up by maybe static eletricity the person will sustain the energy and the energy will make a force field around the person which can and will attract paper and he will be attractive

Explanation:

Examples for effect of force - example

1) Can change the state of an object(rest to motion/ motion to rest):For example, pushing a heavy stone in order to move it. 2) May change the speed of an object if it is already moving. ... 3) May change the direction of motion of an object

Answer:

D

Explanation:

Answer:

r = 0.0548 m

Explanation:

Given that,

Singly charged uranium-238 ions are accelerated through a potential difference of 2.20 kV and enter a uniform magnetic field of 1.90 T directed perpendicular to their velocities.

We need to find the radius of their circular path. The formula for the radius of path is given by :

[tex]r=\dfrac{1}{B}\sqrt{\dfrac{2mV}{q}}[/tex]

m is mass of Singly charged uranium-238 ion, [tex]m=3.95\times 10^{-25}\ kg[/tex]

q is charge

So,

[tex]r=\dfrac{1}{1.9}\times \sqrt{\dfrac{2\times 3.95\times 10^{-25}\times 2.2\times 10^3}{1.6\times 10^{-19}}}\\\\r=0.0548\ m[/tex]

So, the radius of their circular path is equal to 0.0548 m.