Topic
Q:
Un resorte sin masa cuya constante es de
50 niuton por metro y se cuel san
vertical mente can ua masa de 400 gramos
en su extremo libre si se estira 20 certim
etros y lueso se suelta el resorte resibe
mas calcula la frecuercia de oscilacion
Q:
3. Gjej fuqinē e njē motori i cili
merr njè rymë me intensitet 5 A kur
lidhet në burimin me tension 220 V .
Q:
4 Una camionetta dei pompieri viaggia a \( 30 \mathrm{~m} / \mathrm{s} \)
con la sirena accesa, che emette un suono di pe-
riodo \( 1,1 \mathrm{~ms} \).
- Calcola il periodo dell'onda udita da un ragaz-
zo fermo quando la camionetta si avvicina e
quando si allontana.
[1,0 \( \mathrm{ms}, 1,2 \mathrm{~ms}] \)
Q:
True or False: The two types of optical telescopes are refracting and reflecting.
True
False
Q:
For 1:
b) Account for TEN SI derived units (of your choice) and present it as a table with three headings, un
name, symbol, and quantity.
c) Give the Sl prefix for each of the following multiples: both with name and symbol.
i. \( 10^{-12} \)
ii. \( 10^{-9} \)
iii. \( 10^{-6} \)
iv. \( 10^{-3} \)
v. \( 10^{3} \)
vi. \( 10^{5} \)
vii. \( 10^{9} \)
viii. \( 10^{12} \)
Q:
A body of weight W kg.wt was placed on a rough horizontal plane. The
coefficient of static friction between it and the body was \( \frac{1}{5} \), affected by
angle between them is \( 120^{\circ} \). The body was about to move. Find the
value of W .
Q:
Which is not an example of acceleratio
a. maintaining a constant speed
b. slowing down
c. changing direction
d. speeding up
Q:
1.5 A single action suction pump has a diameter of 100 mm and a delivery stroke
of 80 mm and has to be pumped 20 m high vertically.
Calculate:
1.3.1 The volume of water that is pumped per delivery stroke
1.3.2 The mass of water pumped per delivery stroke
1.3.3 The work done per stroke
Q:
Un mitra spara 100 pallottole al minuto aventi
ciascuna la massa di 60 g . Se la forza media che ì
mitragliere esercita per tenere in mano l'arma è
uquale a 50 N , qual è la velocità delle pallottole?
[500 \( \mathrm{m} / \mathrm{s}] \)
Q:
Si un resorte se le cuelsa ua masa de 400 gramos
se forma 20 centimetros
Cual sera el valor de la constante basica?
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