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tangare [24]
3 years ago
14

• 2. particles penetrate through paper.

Physics
1 answer:
AleksandrR [38]3 years ago
7 0

Answer: The penetrating power of alpha rays, beta rays, and gamma rays varies greatly. Alpha particles can be blocked by a few pieces of paper. Beta particles pass through paper and Gamma rays are the most difficult to stop and require concrete, lead, or other heavy shielding to block them.

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Bicycle in its writers have combined a mass of 80 kg in a speed of 6.0 meters per Second what is the magnitude of the average fo
erik [133]

Answer:

F = 120 N

Explanation:

Force x distance = energy

The bike has energy 1/2 . 80 . 6^2   = 1440 J

You are looking at an example of not reading the question properly.

Impulse = Force . time  = change in momentum

F . 4  = 80 .6

F = 120 N

7 0
3 years ago
A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates (1.40
leva [86]

Answer:

The work done required on the coin during the displacement is 21.75 w.

Explanation:

Given that,

A coin slides over a friction-less plane i.e friction force = 0.

The co-ordinate of the given point is (1.40 m, 7.20 m).

The position vector of the given point is represented by  1.40 \hat i+7.20 \hat j.

The displacement of the coin is

\vec d=1.40 \hat i+7.20 \hat j

The force has magnitude 4.50 N and its makes an angle 128° with positive x axis.

Then x component of the force = 4.50 cos128°

The y component of the force = 4.50 sin128°

Then the position vector of the force is

\vec F=(4.50 cos 128^\circ)\hat i+(4.50 sin 128^\circ)\hat j

   =-2.77 \hat i+3.56 \hat j

We know that,

work done is a scalar product of force and displacement.

W=\vec F.\vec d

    =(-2.77 \hat i+3.56 \hat j).(1.40 \hat i+7.20 \hat j)

    =(-2.77×1.40+ 3.56×7.20) w

    =21.75 w

The work done required on the coin during the displacement is 21.75 w.

6 0
3 years ago
Consider the incomplete equation below mc020-1.jpg If this equation was completed, which statement would it best support? Nuclea
vagabundo [1.1K]
<span>Nuclear fission produces elements that are heavier than helium.

The elements that are used in nuclear fission and their products are much heavier than helium.</span>
8 0
3 years ago
Read 2 more answers
A long solenoid (1000 turns/m) carries a current of 25 mA and has an inside radius of 2.0 cm. A long wire which is parallel to a
vampirchik [111]

Answer:

B = 0.031T

Explanation:

Given n1 = 1000turn/m

i1 = 25A

μo = 4π ×10‐⁷ Wb/A•m

B1 = μo×i1×n1

B1 = 4π ×10‐⁷ × 25 × 1000 = 0.031T.

6 0
3 years ago
WHAT- HOW WAS THIS NOT ACADEMIC? IT WAS A QUESTION ABOUT WHY BLACK HOLES ARE INVISIBLE LOL.
LenKa [72]

Answer:

brainly getting too strict smh...

Explanation:

5 0
3 years ago
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