Which of the following would double the resistance in a wire?

a. Double the mass of the wire
b. Double the length of the wire
c. Half the mass of the wire
d. Half the length of the wire

Answer:

I would say C

Explanation:

Hope I helped

Answer:

I think it is c

Explanation:

I don't know how to explain it I'm not really the best at explaining things.

Answer:

6 x 10^8

Explanation:

Take out both the 6, then look at what exponent is bigger, 3 or 8, 8

Answer:

105 = 10 x 10 x 10 x 10 x 10 = 100,000 (5 zeros)

108 = 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 100,000,000 (8 zeros)

Explanation:

Answer:

c

Explanation:

Answer:

[tex] \huge{ \boxed{ \bold{ \sf{8.13 \: seconds}}}}[/tex]

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

☯ Question

☯[tex] \underbrace{ \sf{Required \: Answer : }}[/tex]

✒ Given :

✒ To find :

✎ We know ,

[tex] \boxed{ \underline{ \sf{acceleration \: (a) \: = \frac{final \: velocity \: (v) - initial \: velocity \: (u )}{time \: ( \: t \: )}}}}[/tex]

Substitute the values :

➵ [tex] \sf{2.90 = \frac{23.6 - 0}{t}} [/tex]

➵ [tex] \sf{2.90 = \frac{23.6}{t}} [/tex]

Apply cross product property

➵ [tex] \sf{2.90 \: t \: = 23.6}[/tex]

Divide both sides by 2.90

➵ [tex] \sf{ \frac{2.90 \: t}{2.90} = \frac{23.6}{2.90} }[/tex]

➵ [tex] \sf{t = 8.13 \: seconds}[/tex]

Hope I helped!

Have a wonderful time シ

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Answer:

Explanation:

Lol man

Answer: Zero after 5 s and -10 m/s after 10s

Explanation:

Answer:

2, Ocean waves

Explanation:

Transverse waves look more like ocean waves, and have the same movement.

Answer:

Explanation:

Nnewton=kgm/s²

Answer:

Glia

Explanation:

Answer:

C

Explanation:

Answer: 792J

Explanation:

The value of the total energy will be "792 Joules". To undestand the calculation, check below.

According to the question,

Mass of ball, m = 2.0 kg

Building's height, h = 20.0 m

Ball's initial velocity, v = 20.0 m/s

We know the formula,

Potential energy (U) = mgh

Kinetic energy (K) = [tex]\frac{1}{2}[/tex] mv²

and,

The total energy be:

= U + K

= mgh + [tex]\frac{1}{2}[/tex] mv²

By substituting the values,

= 2.00 × 9.8 × 20.0 + [tex]\frac{1}{2}[/tex] × 2.00 × (20.0)²

= 392 + 400

= 792 Joules

Thus the above answer is correct.

Find out more information about energy here:

https://brainly.com/question/20562687

Answer:

[tex]Distance = 2.4\ km[/tex]

Explanation:

Given

[tex]Time (t) = 6.8s[/tex]

[tex]Temperature = 28C[/tex]

Required

Determine the distance at which the lighting struck

First, we need to determine the speed at which the lighting struck because the peed of sound varies with temperature.

At about 28C, the speed of sound is 346m/s

So, we have the following:

[tex]Speed = 346m/s[/tex]

[tex]Time = 6.8s[/tex]

Distance is calculated as thus:

[tex]Distance = Speed * Time[/tex]

[tex]Distance = 346m/s * 6.8s[/tex]

[tex]Distance = 2352.8[/tex]

Divide by 1000 to get distance equivalent in kilometers

[tex]Distance = \frac{2352.8km}{1000}[/tex]

[tex]Distance = 2.3528km[/tex]

[tex]Distance = 2.4\ km[/tex] ---- Approximated

Answer is D. A capacitor

Answer:

0,00000001 cm = 1 nm is correct

Answer:

10m/s

Explanation:

Answer: 10

Explanation: Because, 10*10= 100 or 100/10=10

Answer:

Ice cubes float on water because they are less dense.

Explanation:

Ice is about 9% less dense than water. Water is heavier, so ice is lighter, causing it to float. It is less dense because the density of water decreases along with a decrease in temperature. Therefore, causing ice to be less dense than water

Answer:

Transverse Waves do not require a medium to travel

Explanation:

Two major types of energy waves are longitudinal waves and transverse waves. A longitudinal wave is a wave where the particles of matter in the medium move in a parallel direction to the motion of the wave. This shows the energy transport and particle movement. The particles of matter only move temporarily. A wave is transferred energy it does not transfer particles of matter. A transverse wave is a wave in which the particles of matter in the medium move in a perpendicular direction to the motion of the wave.

Answer:

Transverse waves do not require a medium to travel.

Explanation:

Answer:

The speed of the apple will be 2.81 m/s when the arrow enters it.

Explanation:                

We can find the speed of the apple by conservation of linear momentum:

[tex] p_{i} = p_{f} [/tex]

[tex] m_{ap}v_{ap_{i}} + m_{a}v_{a_{i}} = m_{ap}v_{ap_{f}} + m_{a}v_{a_{f}} [/tex]

Where:

[tex]m_{ap}[/tex] is the mass of the apple = 100 g = 0.1 kg

[tex]m_{a}[/tex] is the mass of the arrow = 2.5 g = 0.0025 kg

[tex]v_{ap_{i}}[/tex] and [tex]v_{ap_{f}}[/tex] is the initial and final speed of the  apple respectively

[tex]v_{a_{i}}[/tex] and [tex]v_{a_{f}}[/tex] is the initial and final speed of the  arrow respectively

Since the apple was originally at rest ([tex]v_{ap_{i}}[/tex] = 0) and knowing that [tex]v_{a_{f}}[/tex] = [tex]v_{ap_{f}}[/tex] when the arrow enters into the apple, we have:

[tex] 0 + 0.0025 kg*115 m/s = v(0.0025 kg + 0.1 kg) [/tex]  

[tex]v = 2.81 m/s[/tex]  

Therefore, the speed of the apple will be 2.81 m/s when the arrow enters it.

I hope it helps you!  

Answer:

Around 2.8212 sec

Explanation:

Given the eqn x=1/2at^2+vot

your vo=0

39=1/2(-9.8)t^2

=7.95=t^2

=2.82sec

Answer:

Explanation:

The car will fall with acceleration due to gravity which is equal to 9.8 m /s²

For downward fall ,

initial velocity u = o

acceleration due to gravity = g = 9.8 m /s

final velocity v = ?

displacement h = 5.2 m

v² = u² + 2 gh

v² = 0 + 2 x 9.8 x 5.2

= 101.92

v = 10.1 m /s

Answer:

The average speed is [tex]v = 1260 \ km/s[/tex]

The average speed is different from the average velocity in this question

Explanation:

From the question we are told that

   The equatorial  radius of Jupiter is  [tex]R_j = 7.1*10^{4} \ km[/tex]

   The period of oscillation of Jupiter is [tex]T_J = 9 \ hours , 50 \ min = 35400 \ seconds[/tex]

Generally the average speed is mathematically represented as

      [tex]v = \frac{2 \pi * R_j }{T_J}[/tex]

=>   [tex]v = \frac{2 *3.142 * 7.1*10^{4} }{35400}[/tex]

=>   [tex]v = 1260 \ km/s[/tex]

Generally in average speed the direction is not considered while in average velocity the direction is considered for the  case of this question the movement equitorial point has no direction in that it start from one point and after its periodic motion it still remains at that point

Answer:

4.67 N of force are required

Explanation:

The second Newton's law states the net force exerted on a body of mass m that has an acceleration a, is given by:

F=m.a

On the other hand, the kinematics equations relate the acceleration with the change of speed over time, expressed as:

[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]

We are given the initial speed of vo=4 m/s on a mass of m=3.5 Kg, the final speed of vf=8 m/s which took t=3 seconds.

The acceleration is:

[tex]\displaystyle a=\frac{8-4}{3}=1.33[/tex]

[tex]a=1.33\ m/s^2[/tex]

Thus, the force is:

[tex]F=3.5\ Kg\cdot 1.33\ m/s^2[/tex]

[tex]F=4.67\ N[/tex]

4.67 N of force are required

Answer:

A

Explanation:

got it right on edge 2021 :)

The product needs to better solve the problem for which it was designed ( first option )

After testing the new technology on patients and it showed only 25% success rate ( very low success rate).  It is concluded that before Doctors can report that the new technology design is successful is when it better solves the problem for which it was designed for ( i.e. increase in the success rate to > 50% ). because for a procedure to be considered successful for deployment it will need to record a success rate of over 50% of the test patients.

Therefore the product needs to better solve the problem for which it was designed

learn more about medical technology  : https://brainly.com/question/1590235

Answer:

Frictional Force = 1.8 N

Explanation:

From Newton's Second Law, we know that the acceleration is produced in an object, whenever an unbalanced force is applied to it. So, for the production of acceleration application of an unbalanced force is necessary. Since, the block is moving with uniform speed in this case. Therefore, there is no acceleration involved in the motion of block. So, the all the forces acting on the block must cancel the effect of each other. So, that there is no unbalanced force to produce any acceleration. Therefore, the frictional force must be equal to the applied force in order to cancel its effect and balance it.

Frictional Force = Applied Force

Frictional Force = 1.8 N

Answer:

The lower mantle is the liquid inner layer of the earth from 400 to 1,800 miles below the surface.

Explanation: