Answer:
<em>The second ball has four times as much kinetic energy as the first ball.</em>
Explanation:
<u>Kinetic Energy
</u>
Is the type of energy an object has due to its state of motion. It's proportional to the square of the speed.
The equation for the kinetic energy is:
Where:
m = mass of the object
v = speed at which the object moves
The kinetic energy is expressed in Joules (J)
Two tennis balls have the same mass m and are served at speeds v1=30 m/s and v2=60 m/s.
The kinetic energy of the first ball is:
The kinetic energy of the second ball is:
Being m the same for both balls, the second ball has more kinetic energy than the first ball.
To find out how much, we find the ratio:
Simplifying:
The second ball has four times as much kinetic energy as the first ball.
Respuesta:
2 × 10⁴ V
Explicación:
Paso 1: Información provista
- Carga transportada (q): 4 nC
- Trabajo realizado (W): 7 × 10⁻⁵ J
Paso 2: Convertir q a Coulomb
Usaremos el factor de conversión 1 C = 10⁹ nC.
4 nC × 1 C/10⁹ nC = 4 × 10⁻⁹ C
Paso 3: Calcular el potencial eléctrico (V) de la esfera
Usaremos la siguiente fórmula.
V = W/q
V = 7 × 10⁻⁵ J/4 × 10⁻⁹ C = 2 × 10⁴ V
It depends. The strength of gravitational force between non other than two objects depends on two factors. Mass and distance. The force of gravity and masses exert on each other. Making a consequence if one of the masses are doubled, the force of gravity of the the objects is doubled.
Hope this helps.
Taxonomists have noted that as the number of organisms decreases, <u>the more likely the organisms are to share similar characteristics.</u>
<u></u>
Explanation:
- A taxonomist is a biologist that groups organisms into categories.
- A plant taxonomist for example, might study the origins and relationships between different types of roses while an insect taxonomist might focus on the relationships between different types of beetles.
- Taxonomy is the process of naming and classifying things such as animals and plants into groups within a larger system, according to their similarities and differences.
- Taxonomy entails the description, naming, and classification of living things.
- It helps us categorize organisms so we can more easily communicate biological information. Taxonomy uses hierarchical classification as a way to help scientists understand and organize the diversity of life on our planet.
- A taxonomic characteristic may be defined as any expressed attribute of an organism that can be evaluated and that has two or more discontinuous states or conditions.
Answer:
2.7 x 10¹¹ m
Explanation:
Given,
time = 15 minutes
1 min = 60 s
15 min = 15 x 60 = 900 s
Distance of Curiosity from earth
D = Speed x time
Speed of light = 3 x 10⁸ m/s
D = 3 x 10⁸ x 900
D = 2.7 x 10¹¹ m
Distance of curiosity from earth is equal to 2.7 x 10¹¹ m