Answer:
2
Explanation:
helium has 2 protons and 2 neutrons
<h3>
Answer:</h3>
Magnitude of Impulse: 30000 kg · m/s or 30000 N · s
Force on the Car: -6000 N
<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality<u>
</u>
<u>Physics</u>
<u>Momentum</u>
- Momentum Equation: P = mv
- Impulse Equation: J = FΔt
- Law of Conservation of Momentum
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
Mass <em>m</em> = 1.50 × 10³ kg
Velocity <em>v</em> = 20 m/s east
Change in time Δt = 5.00 s
<u>Step 2: Find Magnitude</u>
- Substitute [Momentum]: P = (1.50 × 10³ kg)(20 m/s)
- Multiply: P = 30000 kg · m/s
<u>Step 3: Find Force</u>
<em>We use the Law of Conservation of Momentum to find our break force acting upon the car.</em>
- Substitute [Impulse]: 30000 kg · m/s = F(5.00 s)
- Rewrite: 30000 N · s = F(5.00 s)
- Divide 5 on both sides: 6000 N = F
- Rewrite: F = 6000 N
Since the car is deaccelerating, the break force would be towards the west direction (negative as east is our positive direction).
∴ F = -6000 N
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Below are the choices that can be found elsewhere:
Foraminifera above the boundary are larger and more diverse than those below.
Foraminifera above the boundary are larger and less diverse than those below.
Foraminifera above the boundary are smaller and more diverse than those below.
<span>Foraminifera above the boundary are smaller and less diverse than those below
The answer is </span>Foraminifera above the boundary are smaller and less diverse than those below
<span>
</span>
In a collision, the second collision is when an unsecured driver strikes the inside of the vehicle. It is a collision that happens between an occupant of a vehicle and the vehicle he is riding during the impact. The first collision would be the collision of the vehicle and the other object.
By definition,
density = mass/volume
The mass is 82 g
The volume is 14 cm³
Therefore
density = (82 g)/(14 cm³) = 5.857 g/cm³
In SI units, density = 5857 kg/m³
Answer: 5.857 g/cm³
