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Julli [10]
3 years ago
15

An atom’s mass number equals the number of

Physics
2 answers:
steposvetlana [31]3 years ago
8 0
An atom's mass number equals the number of protons plus the number of neutrons.
Hope this helps! (:
oksian1 [2.3K]3 years ago
4 0

b.  protons plus the number of neutrons.

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Two straight wires are in parallel and carry electrical currents in opposite directions with the same magnitude of 2.0A. The dis
Veronika [31]

Answer:

Explanation:

Two straight wires

Have current in opposite direction

i1=i2=i=2Amps

Distance between two wires

r=5mm=0.005m

Length of one wire is ∞

Length of second wire is 0.3m

Force between the wire,

The force between two parallel currents I1 and I2, separated by a distance r, has a magnitude per unit length given by

F/l = μoi1i2/2πr

F/l=μoi²/2πr

μo=4π×10^-7 H/m

The force is attractive if the currents are in the same direction, repulsive if they are in opposite directions.

F/l = μoi1i2/2πr

F/0.3=4π×10^-7×2²/2π•0.005

F/0.3=1.6×10^-4

Cross multiply

F=1.6×10^-4×0.3

F=4.8×10^-5N

3 0
3 years ago
A steel ball bearing is released from a height H and
ArbitrLikvidat [17]

Answer:

ELASTIC collision

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Explanation:

As the ball bounces to the same height, it can be stated that the impact with the floor is ELASTIC.

As the floor does not move the conservation of the moment

            po = pf

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4 0
3 years ago
Anybody wanna play among us?​
kherson [118]

Answer:

yess

Explanation:

8 0
3 years ago
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Starting at the same time, an arrow and a ball are shot horizontally with a speeds of 50 m/s and 44 m/s respectively from the to
Yuri [45]

Answer:

option D

Explanation:

given.

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Their acceleration due to gravity  is same for both arrow and a ball  9.8 m/s²

they will react bottom at the same time

 time of flight is same for both

now,

In horizontal direction,

distance = speed × time

Since speed is more for arrow, it will travel more horizontal distance  at the same time.

the correct answer is option D

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3 years ago
The type of exercise that you choose will determine what _____will be worked
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Does muscle go in the blank?
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