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Nady [450]
3 years ago
8

CO2 NaCl HCl These may all be classified as

Physics
2 answers:
Makovka662 [10]3 years ago
8 0

Answer:

D) compounds and pure substances.

Explanation:

Nataly_w [17]3 years ago
6 0
Gas because that’s what the periodic table says
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Why do we balance chemical equations
antiseptic1488 [7]
So it could follow the correct mass for the atom
5 0
3 years ago
Jane placed two bar magnets on her desk next to each other with like poles facing. She then sprinkled some iron filings around t
viktelen [127]

Answer:

B.

Explanation:

3 0
4 years ago
Read 2 more answers
A straight wire 0.10 m long carrying a current of 2.0 A is at right angles to a magnetic field. The force on the wire is 0.04 N.
Vladimir79 [104]

Answer:

The strength of magnetic field is 0.2 Tesla.

Explanation:

Data from the question is

Length (L) of wire ; L=0.10 m

Current in wire ; I= 2.0 A

Force on wire ; F = 0.04 N

Angle = Right angle So, \theta\thita = 90^{o}

Now ,

We have to find the magnetic Field strength (B)

For this formula for Force on wire in magnetic field is

F = I \times B \times L \times sin(\theta)

Further modified as

B = \frac{F}{I \times L \times sin(\theta)}

Now insert values in the formula

B = \frac{0.04N}{2.0A \times 0.10 m \times sin(90^{0})}

B = 0.2 T

So, the strength of magnetic field is 0.2 Tesla.

8 0
4 years ago
W=4j, d=2m,and F=10N find cosine
ruslelena [56]
Correct your answer to the amount of significant figures the questions wants

4 0
3 years ago
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
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