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siniylev [52]
2 years ago
15

Which stage of Erik Erikson’s psychosocial theory of personality is the first one and occurs during infancy?

Physics
1 answer:
dangina [55]2 years ago
6 0

Trust vs Mistrust

At this stage the infant is uncertain about the world they live in.

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Which contains the most moles: 10 g of hydrogen gas, 100 g of carbon, or 50 g of lead?
Stolb23 [73]

Answer:

Carbon

Explanation:

We know that

Number of moles = mass/molecular mass

So

Hydrogen: given as H2 with 10g an atomic number of 1 so MW( 1x 2= 2)

Number of moles = Weight/MW

= 10/2

= 5

Carbon: atomic number 12 C and mass 100

Number of moles = Weight/MW

= 100/12

= 8.33

Lead: atomic num 207 and mW 207 pb

Number of moles = Weight/MW

= 50/207

= 0.241

Therefore Carbon has the most moles.

5 0
3 years ago
A 30%-efficient car engine accelerates the 1300 kg car from rest to 10 m/s . How much energy is transferred to the engine by bur
WITCHER [35]

Answer:

The Energy transferred to the engine by burning gasoline = <u>216.67 KJ</u>

Explanation:

The parameters given are:

The efficiency of the car engine, E = 30% = 0.3

Mass, m = 1300 kg

Initial velocity, u = 0, since the car is from rest

The final velocity, v = 10 m/s

Since the car was moving, we calculate its kinetic energy.

kinetic energy = ((1/2) (m) (v^2)

((1/2) (1300 kg) (10 m/s^2)

= 65,000 j

The Energy, Q transferred to the engine by burning gasoline in this case

= potential energy / The efficiency of the car engine, E

Q = 65,000 j / 0.3

= 216,666.66 J

Converting Joule to kilojoule

where 1KJ = 1000j

216,666.66 J = <u>216.67 KJ</u>

3 0
3 years ago
Who invented gravity
PilotLPTM [1.2K]

Answer: joe

Explanation:

5 0
3 years ago
Read 2 more answers
How are element and compound are alike and different?
Dovator [93]
Elements is the simplest form of a pure substance.They cannot be broken down into any thing else ,by either physical or chemical means.In contrasts compounds are pure substances like elements ,they are made up of two or more elements.Just like elements they can be broken down into simpler substances by chemical means,but unlike elements they can only be broken down by chemical means .not both physical and chemical means like elements can.
  (I hope that this was helpful.)
5 0
2 years ago
What is the mass of an object moved with a force of 540 N at an acceleration of 7.74 m/s2?
Nataly_w [17]

okay u need to use the equation m=Fnet/a. Fnet=540N a=7.74m/s^2 m=540N/7.74m/s^2=69.77kg

5 0
3 years ago
Read 2 more answers
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