Topic
Q:
k. La fórmula que permite calcular la rapidez \( v \) de
un cuerpo en movimiento es \( v=\frac{d}{t^{\prime}} \) donde \( d \)
es la distancia recorrida en un tiempot. Si una
motocicleta viaja durante 1,5 horas a \( 92,4 \mathrm{~km} / \mathrm{h} \),
¿cuál es la distancia recorrida?
R:
Q:
6. What effect would the following changes have on a
conductor's resistance? In each situation, explain why the
change occurs.
(a) decreasing the diameter of a conductor
(b) placing an extension cord outside in the winter
(c) plugging two identical extension cords together to make it
longer
Q:
1.) Calcula la presión debida a una fuerza de 70 N que actúa sobre una superfici
de 20 cm 2
2.) Un depósito cilíndrico de 4 m de altura cuya base tiene 1 m de radio está
totalmente lleno de agua. Calcula la fuerza que el agua ejerce sobre el
fondo. ¿Cuánto valdría ésta si el depósito estuviese lleno de aceite de densidad
\( 900 \mathrm{Kg} / \mathrm{m} 3 \) ?
Q:
18. For the safety of pedestrians, a bridge needs to be built over a river with the deepest
point being 34 m deep. Some piles will be placed at that point to support the bridge.
Calculate the absolute pressure at 34 m underwater. (Given: Atmospheric pressure is
101 kPa )
A) 101000 Pa
B) 232200 Pa
C) 434200 Pa
D) 333200 Pa
E) None of the preceding.
Q:
Ein Sprinter schafft die 100 Meter in 12 Sekunden. Auf der \( 400-\mathrm{m} \)-Strecke ist er im Schnitt \( 2.6 \mathrm{~m} / \mathrm{s} \)
langsamer, da er das hohe Tempo nicht so lange durchhalten kann. Berechne seine Durchschnitts-
geschwindigkeit auf der \( 400-\mathrm{m} \)-Bahn und runde auf zwei Stellen nach dem Komma.
Q:
(5) The dual nature of the electron means that it has
\( \begin{array}{ll}\text { a. a mass and a charge. } & \text { b. a charge and a wave motio } \\ \text { c. a volume and a wave motion. } & \text { d. a mass and a density. }\end{array} \)
Q:
Test Yourself
The approximate probable percentage of the possibility of determining the position and
the speed of an electron whose mass is \( 9.1 \times 10^{-\mathbf{- 1 1}} \mathbf{~ k g} \) together precisely is
\( \begin{array}{ll}\text { (3) } 0.0001 \% & \text { (b) } 0.01 \% \\ \text { (C) } 0.1 \% & \text { (d) } 1 \%\end{array} \)
Answer : The correct choice is
Q:
3. Which wave has the highest frequency? Explain your answer.
wave 2 Short wave /ength
4. Which wave has the lowest frequency? Explain your answer.
wave 3 lang wave length
5. Sequence the waves from lowest to highest frequency.
Q:
3. Which wave has the highest frequency? Explain your answer.
wave 2 Short wave /ength
4. Which wave has the lowest frequency? Explain your answer.
wave 3 lang wave length
5. Sequence the waves from lowest to highest frequency.
Q:
Despe una torre se deja caer una piedra que
tarda 6 segundos en llegar Al suelo, calcular la
velocidad con que llega y la Altura De ca Torre
Ask Tutors
Ask AI
10x
Fastest way to Get Answers & Solutions
By text
Enter your question here…
By image
Re-Upload
Uploaded Files
xxxx.png0%
Submit
