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A 0.5kg squirrel climbs a tree. When it reaches the top its potential energy is 34.3J. How high did it climb?

Answer:

(D) is visible light

Explanation:

(F) is xray and (B) is radio

Answer:

Explanation:

Force on the electron due to magnetic field 's north component will be zero because both velocity of electron and direction of magnetic field are same .

Force due to downward component of magnetic field

= B q v where B is magnetic field , q is charge moving and v is velocity of charge

F = 5 .00 x 10⁻⁵ x 1.6 x 10⁻¹⁹ x 4 x 10⁷

= 32 x 10⁻¹⁷ N

acceleration = F / m where m is mass of electron

= 32 x 10⁻¹⁷ / 9.11 x 10⁻³¹

= 3.5 x 10¹⁴ m/s²

Answer:

False

Explanation:

Answer:

the electrostatic force between the two protons is 5.775 x 10⁻²⁹ N.

Explanation:

Given;

charge of protons, q = 1.602 x 10⁻¹⁹ C

distance between the two charges, r = 2.0 m

The electrostatic force between the two protons is calculated as;

[tex]F = \frac{kq^2}{r^2}[/tex]

where;

k is coulomb's constant, = 9 x 10⁹ Nm²/C²

[tex]F = \frac{(9\times 10^9)(1.602 \times 10^{-19})^2}{(2)^2} \\\\F = 5.775 \times 10^{-29} \ N[/tex]

Therefore, the electrostatic force between the two protons is 5.775 x 10⁻²⁹ N.

The force between the two protons separated by the distance of 2 m will be [tex]F=5.775\times 10^{-29}\ N[/tex]

The coulomb's force is defined as when two charged particles are separated by the distance r and having charge q then the force will be directly proportional to the product of the charges and inverse to the distance between them.

The coulomb's force will be given by

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

Here it is given that

Charge on the proton=[tex]q=1.602\times 10^{-19}\ C[/tex]

The distance between protons = 2 m

The value of constant  [tex]k=9\times 10^{-29}\ \dfrac{Nm^2}{C^2}[/tex]

Putting the values in the formula

[tex]F=\dfrac{(9\times 10^9) (1.602\timeds 10^{-19}^)^2}{2^2}[/tex]

[tex]F=5.775\times 10^{-29}\ N[/tex]

Hence the force between the two protons separated by the distance of 2 m will be [tex]F=5.775\times 10^{-29}\ N[/tex]

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Answer:

D. Tidal energy is replaced naturally by the Moon's gravity.

Explanation:

The reason tidal energy is considered a renewable energy resource is that Tidal energy is replaced naturally by the Moon's gravity. The Moon's gravity creates bulges on the side of Earth that is closest and farthest from the Moon. These bulges also pull water causing high tides in those areas. As the Earth rotates these areas experience low tide while the areas that had low tide now experience high tide. This constant shift creates tidal energy every day, which is replenished naturally.

Statement C  is false. Doubling the mass doubles the acceleration is the wrong statement.

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.

Force is defined as the product of mass and acceleration. Its unit is Newton.

Mathematically, the force is;

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

If force is constant, the mass is inversely proportional to the acceleration. If the mass is double in that condition, acceleration is halved.

Doubling the mass doubles the acceleration is the wrong statement.

Hence, statement C  is false

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Answer:

to lower the centre of gravity

Explanation:

Answer:

I think it's true.

Hope this helps .

Explanation:

The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic.

Answer:

When you put un-like poles together (South facing North) you can feel magnetic attraction. In the Northern Hemisphere, your compass needle points North, but if you think about it for a moment, you will discover that the magnetic pole in the Earth's Northern Hemisphere has to be a South polarity.

Answer:

B) Walker 2 was at rest for the first five seconds. D) Walker 2 moved faster overall than walker 1 by the end. E) Both walkers had reached the same distance at fifteen seconds.

Explanation:

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Answer:

Acceleration

Explanation:

Explanation:

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Answer:

C the baseball began at rest and rolls at a rate of 14.7 m/s after 1.5 seconds

Answer:thermal energy

Explanation:

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Mechanical waves have a crest but no trough is a characteristic of a mechanical wave but not a characteristic of an electromagnetic wave.

The waves that are related to both electricity and magnetism are known as electromagnetic (EM) waves. These waves are made up of time-varying electric and magnetic fields that travel over space.

Mechanical waves have a peak but no dip, which is a mechanical wave characteristic but not an electromagnetic wave characteristic.

Hence, mechanical waves have a crest but no trough is a characteristic of a mechanical wave but not a characteristic of an electromagnetic wave.

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Answer:

The locus of points where the electric field due to these lines is zero is;

Along the line between the lines closer to line#1 than line #2

Explanation:

The charges on the parallel lines #1 and #2 = Positive linear charge

The charge density on line #2, λ₂ = 2 × The charge density on line #1, λ₁

Therefore, we have;

λ₂ = 2 ×  λ₁

Electric field strength, E, is given as follows;

[tex]E = \dfrac{\lambda}{2\cdot \pi\cdot \epsilon_0\cdot d}[/tex]

Therefore;

[tex]E_1 = \dfrac{\lambda_1}{2\cdot \pi\cdot \epsilon_0\cdot d}[/tex]

[tex]E_2 = \dfrac{\lambda_2}{2\cdot \pi\cdot \epsilon_0\cdot d} = 2 \times\dfrac{\lambda_1}{2\cdot \pi\cdot \epsilon_0\cdot d}[/tex]

E₂ = 2·E₁

E₂/2 = E₁

E₂/(2·d) = E₁/d

The strength of the electric field at a given distance from line #2 is 2 times the strength of the electric field from line #1 at the same distance

Therefore the strength of the electric field will be the same at a point twice the distance from line #2 than from line #1 which is a point closer to line #1 than line #2.

Explanation:

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Answer: current is 8.0 A

Explanation: R= U/I I = U/R = 120 V/15 Ω= 8.0 A

There are eight hydrogen atoms in (NH4)2SO4

Answer:

Forensic scientists must accurately interpret test results

Explanation:

Misinterpreting test results could mean someone being falsely accused of a crime which you would want to avoid.

Answer:

40 m/s.

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 60 m/s

Height (h) = 100 m

Acceleration due to gravity (g) = 10 m/s²

Final velocity (v) =?

The velocity at height 100 m can be obtained as follow:

v² = u² – 2gh (since the ball is going against gravity)

v² = 60² – (2 × 10 × 100)

v² = 3600 – 2000

v² = 1600

Take the square root of both side

v = √1600

v = 40 m/s

Thus, velocity at height 100 m is 40 m/s

Answer:

661.25, I believe!

Explanation:

KE = (1/2)(2.5)(23)^2

KE=(1.25)(529)

KE= 661.25

Explanation: It's really blurry and sideways

Answer:

-0.39 (rounded to the nearest hundredth)

Explanation:

The exact answer is -0.388888889

Answer:

3.7

Explanation:

You are gonna want to start with -5/15 and get -1/3

now we have -1/3 times 2/3

-1/3  x  2/3  -   1/2  x  1/3

              -.17 = -1/2 x  1/3

-.2=-1/3 x 2/3

To find the Voltage, ( V ) [ V = I x R ] V (volts) = I (amps) x R (Ω)

To find the Current, ( I ) [ I = V ÷ R ] I (amps) = V (volts) ÷ R (Ω)

To find the Resistance, ( R ) [ R = V ÷ I ] R (Ω) = V (volts) ÷ I (amps)

To find the Power (P) [ P = V x I ] P (watts) = V (volts) x I (amps)

Answer:

people could just have a space heater or they are wearing warm clothes.

Explanation:

COMMON SENSE!!!!!

Answer:

They have a common ancestor

Explanation:

Similar arm bones are present in different types of animals as mentioned which are humans, birds, whales and lizards and the reason is that all of them had the same ancestors and eventually the species evolved into present day forms.

Other options are wrong because.

1. Function is these bones obviously are not same as whales have no arms like humans or birds.

2. They do not live in same environment as whales are in oceans and birds are in airborne whereas humans and lizards are land occupying.

3. All animals are different from each other and do not resemble humans.

Therefore the correct answer is that their ancestors were common.