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iragen [17]
3 years ago
9

An object of mass 14kg is falling in air and experiences a force due to air resistance of 16N. Determine the magnitude of net fo

rce acting on the object.
Physics
1 answer:
Mice21 [21]3 years ago
8 0

Answer:

so, net force acting on the object is 121.2 Newton.

Explanation:

net force acting on it =

gravitational force acting on it - air resistance.

so, gravitational force ( g ) = mass × acceleration

  • force ( g ) = 14 × 9.8

( 9.8 is acceleration due to gravity )

  • force ( g ) = 137.2 N

force acting due to air resistance = 137.2 - 16

  • = 121.2 N
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A 5.5kg radio is pushed across the table. If the acceleration is 5m/s to the right, find the net force exerted on the radio.
Sholpan [36]

Answer:

Net force exerted on the radio is 27.5 Newton.

Given:

Mass = 5.5 kg

Acceleration = 5 \frac{m}{s^{2} }

To find:

Force exerted on the radio = ?

Formula used:

F = ma

Where F = net force

m = mass

a = acceleration

Solution:

According to Newton's second law of motion,

F = ma

Where F = net force

m = mass

a = acceleration

F = 5.5 × 5

F = 27.5 Newton

Hence, Net force exerted on the radio is 27.5 Newton.


4 0
4 years ago
how to find the change in spring potential energy of the block-spring system from when the block is released to when the block h
Serhud [2]

Answer: Subtract the kinetic energy of the block at x=0.02mx=0.02m from the kinetic energy of the block at x=0.00mx=0.00m.

Explanation:

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3 years ago
The natural functions of Earth seem all _____ in one way or another. interconnected the same separate
34kurt
Interconected ...........
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3 years ago
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Chứng minh V=kq/r từ mối liên hệ giữ E và V
Marat540 [252]

Answer:V=Aq=KQr

Explanation:

Không biết V bạn kí hiệu ở đây là gì nhỉ? Có phải là điện thế?

Điện thế tại 1 điểm trong điện trường được định nghĩa là công làm vật dịch chuyển từ vị trí đó đến vô cùng. V = A/q

Chứng minh thì được, nhưng chỉ e bạn không có hiểu biết về nguyên hàm, tích phân nên không hiểu.

- Xét tại vị trí cách điện tích Q một đoạn x, khi đó điện tích q sẽ chịu 1 lực: dF=KQ.qx2

Điện tích q dịch chuyển 1 khoảng dx rất nhỏ. Khi đó công do lực điện trường gây ra là:

dA=dF.dx=KQ.qx2dx

Công để dịch chuyển điện tích q từ vị trí r đến vô cùng là:

A=∫∞rdA=∫∞rKQ.qx2dx=KQ.qr−KQ.q∞=KQ.qr

Theo đúng định nghĩa: V=Aq=KQr

4 0
3 years ago
How are electrons represented in orbitals?
Alexxx [7]
Electrons move in atomic orbitals (or subshells). there are four different orbital shapes (s p d f). in each shell, the s subshell is at a lower energy than the p. an orbital diagram is used to determine an atom's electron configurations
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