4 years ago

Which three of these statements about current and voltage in a series circuit are true ?

1 answer:

5 0

1). No. In a series circuit, the current leaving the battery is the same as the current arriving back at the battery at the other end of the circuit, and the same as the current at every point around the circuit.

2). True.
3). True
4). True

5). No. See #3.

6). No. See #2.

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A baseball has a mass of 0.15kg .What is the net force on the ball if it's acceleration is 40.0m/sw

kvasek [131]

By Newton's second law, we have

$F=ma$

So, in order to give a 0.15kg body an acceleration of 40m/s^2, you need a force of

$F=0.15\cdot 40 = 6N$

7 0

4 years ago

If the mass of block B is 2kg, the gravitational force exerted on block B is most nearly which of the following?

Katen [24]

Answer:

20 N.

Explanation:

The following data were obtained from the question:

Mass of block B (m) = 2 Kg

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

Gravitational force (F) =..?

Force is simply defined as the product of mass and acceleration i.e

Force = mass (m) × acceleration (a)

F = ma

Thus, we can say that the gravitational force on block B will be the product of the mass of block B and acceleration due to gravity i.e

Gravitational force (F) = mass of block B (m) × acceleration due to gravity (g)

F = mg

Mass of block B (m) = 2 Kg

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

Gravitational force (F) =..?

F = mg

F = 2 × 10

F = 20 N

The, the gravitational force exerted on block B is 20 N

6 0

3 years ago

Calculate the water pressure in the pipes at the bottom of a high-rise building that is fed by reservoir 60 m above the roof top

yan [13]

P + gh
14 + (9.8)(60) = 602kPa

5 0

3 years ago

What is the pressure at the very bottom of a lake, which is 432 ft deep? (assume an air pressure of 1.013 ✕ 105 pa.)?

aleksley [76]

Preasure at the bottom would be Air Pressure at the top added to the pressure due to the water height.
so pressure = air pressure + hdg
where,
h = depth of the lake, (432ft into metres)
d = density of water (1000kg/m^3)
g = 9.81 m/s^2 (approx.)

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4 years ago

How many groups are in the modern periodic table? 12 18 22 24

Elan Coil [88]

Answer:

Explanation:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

3 0

4 years ago

Read 2 more answers