Answer:
Bluegills are the primary food source in every farm pond. They spawn from May to September and provide a large amount of food to the predators in the pond.
Explanation:
Answer: False.
Explanation: The Earth rotates once per day in direction from East to West. The rotation of the Earth daily is responsible for day and night experienced, the areas of the Earth facing the Sun experiences day time while the areas of the Earth away from the Sun in the Earth's shadow experiences night time.
While the revolution of the Earth around the gives rise to a year, as it takes 365 days for the Earth to go round the sun.
Answer:
a) E = 7.57 10⁻⁵ N / C, b) B= 2.11 10⁻¹⁸ T, c) the magnitudes remain the same, but the sign of the responses change
Explanation:
a) The electric field due to a charged particle is
E = k q / r²
Let's look for the distance from the origin where the particle is to the point of interest
r² = (-3 10⁻³ -0)² + (-3 10⁻³ -0)²
r² = 19 10⁻⁶
The proton charge is
q = +1.6 10⁻¹⁹ C
Let's calculate
E = 8,988 10⁹ 1.6 10⁻¹⁹ / 19 10⁻⁶
E = 7.57 10⁻⁵ N / C
b) to calculate the magnetic field let's use the Biot-Savat law
B = μ₀/4π I / r²
The current is defined as the number of carriers per unit of time at a given point
I = q v
Let's calculate
B = 4π 10⁻⁷ /4π (1.6 10⁻¹⁹ 4 10⁴) / 19 10⁻⁶
B= 2.11 10⁻¹⁸ T
c) an electron has a charge of the same magnitude, but in the opposite direction, negative.
Therefore the magnitudes remain the same, but the senses (sign) of the responses change
Answer:
Explanation:
given,
mass of the object = 280 g = 0.28 kg
time period = 0.270 s
total energy of the system = 4.75 J
maximum speed of the object V =
V= 5.82 m / s
(b) force constant of the spring K = m ω²
where ω = angular frequency = 2π / T
T= time period = 0.25 s
ω = 25.13 rad / s
K = 0.28 × 25.13²
K = 176.824 N / m
(c). Amplitude of motion A =
=
A = 0.232 m