A large object is to be pulled along using two ropes that are attached at the same point. The angle between the two ropes is 30°. The force exerted in one rope is 500N and in the other 600N. Calculate the resultant force acting on the object.
Show your working.

Answer:

Vo = 18.3 [m/s]

Explanation:

To solve this problem we must use the following equation of kinematics.

\(v_{f} =v_{o} -a*t\)

Vf = final velocity = 0 (the bike stops)

Vo = initial velocity [m/s]

a = desacceleration = 6.42 [m/s²]

t = time = 2.85 [s]

Note: the negative sign in the above equation means that the motorcyclist decrease his velocity.

0 = Vo - (6.42*2.85)

Vo = 18.3 [m/s]

Inertia is a force which brings all objects to a rest position. Fast-moving objects have more inertia than slow-moving objects. False - The speed of an object has no impact upon the amount of inertia that it has. Mostly True - Two objects of the same mass can weigh differently if they are located in different locations.

I don't know if this will help

Answer:

By Gauss' Law the sphere will appear externally as if all of the charge were concentrated at the center of the sphere.

E = K Q / r^2 = K Q / .528^2

Q = 1710 * .528^2 / 9.00E9 Coulombs

Q = 5.30E-8 Coulombs on sphere

V = 4/3 π R^3 = 4/3 π * .384^3 = .237 m^3

ρ = Q / V = 5.30E-8 / .237 = 2.23E-7 C/m^3

At .223 from center Q = 4/3 π .223^3 * ρ  (charge outside this radius will not affect electric field outside .223 m)

Q = 2.23E-7 * 4/3 * π * .223^3 = 1.04E-8 Coulombs

E = 9.00E9 * 1.04E-8 / .223^2 = 1880 N/C

Explanation:

hope it helps you

Answer:

Ingles porfavor

Explanation:

Answer:

j type the question into wolfram it gives you answer plus explanation

The astronaut's final speed with respect to the shuttle after the tank is thrown would be 2.67 m/s.

Let's first find the initial momentum of the system, which is zero because the astronaut is at rest with respect to the shuttle and the tank is thrown in the opposite direction with a speed of 12 m/s:

p_initial = m_astronaut * v_astronaut_initial + m_tank * v_tank_initial

where m_astronaut = 63 kg is the mass of the astronaut, v_astronaut_initial = 0 m/s is the initial velocity of the astronaut, m_tank = 10 kg is the mass of the oxygen tank, and v_tank_initial = -12 m/s is the initial velocity of the tank (negative because it is thrown in the opposite direction).

p_initial = 63 kg * 0 m/s + 10 kg * (-12 m/s) = -120 kg m/s

After the tank is thrown, the system experiences no external forces, so its total momentum remains constant:

p_final = m_astronaut * v_astronaut_final + m_tank * v_tank_final

Since the tank is thrown away from the astronaut with a certain momentum, the astronaut gains an equal and opposite momentum, so we can write:

p_final = -p_initial

Substituting the values of p_final and p_initial, we get:

m_astronaut * v_astronaut_final + m_tank * v_tank_final = -120 kg m/s

We also know that the tank is thrown away at a certain speed, so we can write:

v_tank_final = -12 m/s

Thus:

m_astronaut * v_astronaut_final + 10 kg * (-12 m/s) = -120 kg m/s

v_astronaut_final = (120 kg m/s - 10 kg * (-12 m/s)) / 63 kg

v_astronaut_final = 2.67 m/s

Therefore, the astronaut's final speed with respect to the shuttle after the tank is thrown is 2.67 m/s.

More on the speed of astronauts can be found here: https://brainly.com/question/15561276

#SPJ1

The efficiency of the kettle is 117.9%

Efficiency is used to measuring how much work or energy we can conserve in a process. In other words, it is like comparing the output of the energy to the input of the energy in any given system.

It is also define as the ratio of  Energy Input to the Energy Output. To express it in percent multiply it by 100.

Here, Efficiency = Energy output / Energy input

          \(η =\frac{W_{out} }{W_{in} } * 100\)

\(η = \frac{198kJ}{168kJ} * 100\)  

=  117.9%

So , the efficiency is 117.9%

For more Efficiency related question visit:

https://brainly.com/question/13110830

#SPJ1

the centripetal force acting on the rider at the top is less than at the bottom, which means that the forces on the rider are kept within allowable limits.

Loop-the-loop roller coaster rides are designed in such a way that the loop is not a perfect circle but has a larger radius of curvature at the bottom than at the top in order to keep the forces on the riders within allowable limits. However, to understand the reason behind this design, we need to first understand what happens to the rider as he passes through the loop.

When the rider is at the top of the loop, the gravitational force acting on him is less than the centripetal force required to maintain the circular motion, so the net force acts upward. Hence, the rider feels lighter, or weightless. However, when he is at the bottom of the loop, the gravitational force acting on him is greater than the centripetal force, and hence, the net force acts downward, adding to the weight of the rider.

Therefore, to keep the forces acting on the rider within allowable limits, the radius of curvature at the bottom is made larger than at the top. This means that the speed of the roller coaster at the top of the loop is slower than at the bottom of the loop, as the radius of curvature is smaller.

Therefore, the centripetal force acting on the rider at the top is less than at the bottom, which means that the forces on the rider are kept within allowable limits.

To learn more about centripetal force visit below link

https://brainly.com/question/14021112

#SPJ11

Answer:

False

Explanation:

A well-oiled machine has oil because there is friction. The oil lessens the friction and also allows the machine to operate and function without wear parts heating up. Oil is a cooling lubricant that decreases friction but does not eliminate it.

Answer:

Frequency, in physics, the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.

Explanation:

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 = 7.826A

R = 29.38 Ω

Explanation:

First, let us find the current of the microwave.

Let us use the below formula for that.

Power = Voltage × Current

Current = Power ÷ Voltage

             = 1800w ÷ 230v

             = 7.826 A

And now let us find the resistance using the below formula.

Voltage = Current × Resistance

Resistance = Voltage ÷ Current

                   = 230V  ÷ 7.826A

                    = 29.38 Ω

Answer:

Correct answer is B.

Explanation:

The world's most ecologically diverse terrestrial ecosystems are tropical rainforests. The Amazon rainforest is the largest tropical rainforest on the planet. Around 40,000 plant species, approximately 1,300 bird species, 3,000 fish species, 427 animal species, and 2.5 million insect species call it home.In total around 100 thousand different plant and animal species can be found in tropical rainforests.

Learn more about species here:

https://brainly.com/question/23445324

#SPJ2

Answer:

I don't know I'm sorry I will tell you another answer asks me

ANSWER

False.

EXPLANATION

In radioactive decay (or nuclei decay), an unstable nucleus emits radiation into a nucleus that is table and has less energy and a lower mass.

Therefore, nuclei decay from a less stable form to a more stable form.

The answer is false.

The universe expanding

Initially scientists believed that the universe expanded because of momentum. Right after the BIG BANG THEORY, our universe received something called dark energy and since then the universe has only expanded in an accelerating manner.

More about universe expanding

THE DARK MATTER-The dark matter or dark energy which had been radiated after the big bang theory is supposed to be the main reason causing the expansion of the universe. Also on a daily basis, there are a lot of radiations emitted which we are not aware of. They too contribute to the dark matter.

MODIFIED GRAVITY-Through the Einstein's equations it is clear that gravity has been calculated accurately. But many scientists believe that the equations are not correct and are a mixture of many complicated calculations that we do not know about.

INCONSTANT DARK ENERGY-As we know the dark energy is present in the whole universe that is all the galaxies. Scientists say, what if the energy is inconsistent and due to the pressure of the dark energy the universe is expanding. There could be endless reasons to why this is happening but these are the most believed ones.

To learn more about expanding universe

brainly.com/question/24249419

#SPJ4

Answer: The 6 kg rock sitting on a 3.2 m cliff.

Explanation:

The potential energy of an object of mass M that is at a height H above the ground us:

U = M*H*g

where g is the gravitational acceleration:

g = 9.8m/s^2

Then:

"An 8 kg rock sitting on a 2.2 m cliff"

M = 8kg

H = 2.2m

U = 8kg*2.2m*9.8 m/s^2 = 172.48 J

"a 6 kg rock sitting on a 3.2 m cliff"

M = 6kg

H = 3.2m

U = 6kg*3.2m*9.8m/s^2 = 188.16 J

You can see that the 6kg rock on a 3.2m cliff has a larger potential energy.

Answer:

Kepler refined the Copernican model. Orbits are not circles along which planets move at a constant speed, but ellipses, in the central focus of which is the Sun. The planet moves in an ellipse with a variable speed depending on the distance to the Sun. On this basis, Kepler significantly simplified the Copernican model and formulated the laws of planetary motion in their orbits.

Answer:

2min

Explanation:

i think it will be clear from photo

Answer: The formula for current is charge/time

so here we have to change subject so we are asked to look for time  

Explanation: so it would be T=Q/I

T=4/2

T=2s

hope this helpss

Answer:

all of the above?

Explanation:

I think that is

Answer:

Networking cables are networking hardware used to connect one network device to other network devices or to connect two or more computers to share printers, scanners etc. Different types of network cables, such as coaxial cable, optical fiber cable, and twisted pair cables, are used depending on the network's physical layer, topology, and size. The devices can be separated by a few meters (e.g. via Ethernet) or nearly unlimited distances (e.g. via the interconnections of the Internet).

There are several technologies used for network connections. Patch cables are used for short distances in offices and wiring closets. Electrical connections using twisted pair or coaxial cable are used within a building. Optical fiber cable is used for long distances or for applications requiring high bandwidth or electrical isolation. Many installations use structured cabling practices to improve reliability and maintainability. In some home and industrial applications power lines are used as network cabling.

Explanation:

Im not sure, so nasa sa inyo if kokopyahin nio

ps: follow me later

Answer:

focal length

Explanation:

This describes focal length of the beam

Answer:

One of the harder ideas to grasp in fusion is that nuclei, which, because of their electric charge, strongly repel at long range

(compared to the size of a nucleus), can strongly attract at short range. This activity allows students to explore a similar situation in

which

the magnetic interaction provides the repulsion (similar to the electric interaction within

the nucleus) and Velcro provides an attractive force at short range (similar to the nuclear

strong interaction).

Explanation:

Brainliest Answer pls

Answer: The air is full of water, as water vapor, even if you can't see it. Condensation is the process of water vapor turning back into liquid water, with the best example being those big, fluffy clouds floating over your head. And when the water droplets in clouds combine, they become heavy enough to form raindrops to rain down onto your head.

Explanation:

The information in the table about four different electric circuits, Circuit 1 is 40A, Circuit 2 is 80A, Circuit 3 is 160A , Circuit 4 is 240A. Circuit 4 will have the greatest electric current with 240A.

To determine the electric current in a circuit, you can use Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R).

I = V/R

So in Circuit 1 I = 20V / 0.5 Ohms = 40 A

In Circuit 2 I = 40V / 0.5 Ohms = 80 A

In Circuit 3 I = 40V / 0.25 Ohms = 160 A

In Circuit 4 I = 60V / 0.25 Ohms = 240 A

Therefore Circuit 4 will have the greatest electric current with 240A.

Learn more about Electric Current here:

https://brainly.com/question/2264542

#SPJ4

No, SCID is not a deletion mutation.

The AK2 gene, which codes for the mitochondrial enzyme adenylate kinase 2 (AK2), is mutated (missense mutations; deletions) in SCID, which is brought on by an increase in lymphocyte apoptosis [75,76]. A category of extremely rare diseases known as severe combined immunodeficiency (SCID) are brought on by abnormalities in various genes involved in the growth and operation of immune cells that fight infections. At birth, infants with SCID seem healthy, yet they are prone to serious infections.

Due to mutations in the gene encoding the common chain for several cytokine receptors, X-linked SCID is the most prevalent kind. Adenosine deaminase deficiency (ADA def.) and IL-7R-chain deficiency are the second and third most frequent causes, respectively.

To learn more about SCID from given link

https://brainly.com/question/15526421

#SPJ4

A system is at rest. The mass of each object is shown. Neglecting the mass of the strings, the number of forces that are acting on the 6 kg block is option B. There are 2 forces

The system is at rest, so the forces acting on the 6 kg block must be balanced. Since the only forces acting on the block are the tensions in the strings, there must be two forces acting on the block. The correct answer is B. There are 2 forces.

Therefore, the mass of each object is shown. Neglecting the mass of the strings, the number of forces that are acting on the 6 kg block is option B. There are 2 forces.

learn more about forces: https://brainly.com/question/12970081

#SPJ1

From the information given,

diameter of ornament = 8

radius = diameter/2 = 8/2

radius of curvature, r = 4

Recall,

focal length, f = radius of curvature/2 = 4/2

f = 2

Recall,

magnification = image d