Answer:
1-F; 2-G; 3-J; 4-B; 5-C; 6-I; 7-A; 8-E; 9-D; 10-H.
Explanation:
1.This is an organism which feeds on, but usually does not kill, a larger organism. F. Parasite
2.This is an animal that lives by preying on other animals.G. Predator
3.This is an interdependent relationship between two different species.J. Symbiosis
4. is an organism that relies on other organisms for its food and energy supply; also called a heterotroph. B. Consumer
5.This is an organism that breaks down and gains nutrients from dead organisms. C. Decomposer
6.This is an organism that supplies matter and energy, also known as an autotroph. I. Producer
7.This is the interaction of two organisms where one is helped and the other is neither helped nor harmed. A. Commensalism
8.This is the interaction of two organisms where both benefit. E. Mutualism
9. An organism that harbors a parasite, mutual partner, or commensal partner, typically providing nourishment and shelter.D. Host
10.An animal that is killed and eaten by another animal. H. Prey
B. Wave A has the higher frequency. It's frequency is 25 Hz
C. Wave B has the higher frequency. It's frequency is 42 Hz
D. Wave B has the higher frequency. It's frequency is 7 Hz
Answer:
B
Explanation:
Answer:
a. 80 J/cell b. 1.02 × 10²¹ W/m² c. 8.77 × 10¹¹ V/m d. 2.92 × 10³ T
Explanation:
a. We know that energy E = Pt where P = power and t = time
The total energy delivered to all the 100 cells is E = average power × time
average power = 2 × 10¹² W and time = 4 ns = 4 × 10⁻⁹ s
E = 2 × 10¹² W × 4 × 10⁻⁹ s = 8 × 10³ J
The energy per cell E₁ = E/100 = 8 × 10³ J/100 = 80 J/cell
b. Intensity, I = P/A where P = power per cell = 2 × 10¹² W/100 = 2 × 10¹⁰ W and A = area = πr². Since the cell is modeled as a disk of diameter d = 5.0μm, r = d/2 = 5.0 μm/2 = 2.5 μm = 2.5 × 10⁻⁶ m
I = P/A = P/πr² = 2 × 10¹⁰ W/π(2.5 × 10⁻⁶ m)² = 1.02 × 10²¹ W/m²
c. The intensity I = E²/2cμ₀ where E = maximum value of electric field, c = speed of light = 3 × 10⁸ m/s and μ₀ = 4π × 10⁻⁷ H/m
E = √(I2cμ₀) = √(2 × 1.02 × 10²¹ W/m² × 3 × 10⁸ m/s × 4π × 10⁻⁷ H/m) = 8.77 × 10¹¹ V/m
The maximum magnetic field B is gotten from E/B = c
B = E/c = 8.77 × 10¹¹ V/m/3 × 10⁸ m/s = 2.92 × 10³ T
A) 3 x 10-3 N
B) 3 x 10-2 N
C) 3 x 10-1 N
D) 3 x 10 N
Answer:
Approximately , assuming that .
Explanation:
Under the assumptions, the package would start with an initial upward velocity of and accelerate downward at a constant (negative because acceleration points downward.)
Right before landing, the package would be below where it was released. Hence, the displacement of the package at that moment would be (negative since this position is below the initial position.)
The duration of the motion can be found in the following steps:
Rearrange the SUVAT equation to find , the velocity of the package right before reaching the ground. Notice that because the package would be travelling downward, the value of should be negative.
.
Subtract the initial velocity from the new value to find the change in velocity. Divide this change in velocity by acceleration (rate of change in velocity) to find the duration of the motion:
.
Explanation:
Carrying a heavy bag with a string of wire can cause more pain compared to carrying a bag without a string of wire due to a few reasons.
Firstly, the presence of the string of wire adds additional pressure and strain on your hand, making it harder to grip and carry the bag comfortably. The wire can dig into your skin and cause discomfort or even pain. Imagine holding a bag with a smooth handle versus holding a bag with a sharp wire cutting into your hand - the latter would definitely be more painful.
Secondly, the wire can create friction against your skin. As you carry the bag and walk, the movement can cause the wire to rub against your hand, resulting in irritation and potentially even blisters. This friction can also cause the wire to dig deeper into your skin, intensifying the pain.
Lastly, the weight distribution of the bag can be affected by the presence of the wire. When you carry a heavy bag, it is ideal for the weight to be evenly distributed to minimize strain on specific areas of your body. However, the wire can create an uneven distribution of weight within the bag. This can lead to increased pressure and discomfort on certain parts of your hand, making it more painful to carry the bag.
In summary, carrying a heavy bag with a string of wire can hurt more due to the additional pressure and strain on your hand, the friction caused by the wire rubbing against your skin, and the uneven weight distribution within the bag. It is important to consider these factors when carrying heavy objects to minimize discomfort and potential injury.
Answer: 3978 pF
Explanation:
Capacitance can be defined as ability to store charge. It is the ratio of charge over electric potential.
where, A is the area of the plates and d is the distance between plates forming the capacitor.
diameter of the plates, di = 15 cm =0.15 m
radius of the plate, r = di/2 = 0.075 m
Area of the plates, A = πr² = 0.018 m²
Distance between the plates, d = 0.04 mm = 0.00004 m
Permittivity, ∈₀ = 8.84 × 10⁻¹² F/m
Capacitance,