The international system of units si has how many

The international system of units (SI) has how many base units? Ans: 7
32.
Accuracy is described as: Ans: the closeness of a single measurement
to its true value
33.
Which of the following is the most acidic? ANS : BATTERY ACID
Physics
1.
Where is the image located when an object is placed 30 cm from a convex
mirror with a local length of 10 cm? Note: you should have figure this out
exactly. Only one answer is in the right ballpark. ANS: 7.5cm in the back
2.
Some yellow objects actually absorb yellow light but reflect red and green
light. If we shine yellow light on such a yellow object, it will appear ...... to
our eyes. ANS: Black
3.
A 10 kg brick and a 1 kg book are dropped in a vacuum. The force of
gravity on the 1kg book is ANS: 1/10 as much as the force on the 10 kg
brick?
4.
Light is similar to radiant_____ But has different frequencies and
wavelengths. ANS: Heat

5.
My 200kg sister is moving with a momentum of 600 kg m/s. How fast must
she be moving? ANS: 3 m/s
6.
A cruise ship coasts into the dock with considerable momentum. If its
mass didn’t change, but its speed was reduced by a half, its momentum
will be ANS: Halved (note: mali ang mga choices sa FA)
7.
If the velocity of an object is constant, then its acceleration must be ANS:
Zero
8.
If an impulse is applied to an object, it will experience ANS: a change in
momentum
9.
Which of these terms describes to us how nature behaves ANS: Law?
10.
A kilogram is a measure of ANS: Mass
11.
A ray of light passing through the focal point at an angle to the optic axis
of a concave mirror is reflected back ANS: Parallel to the optic axis
12.
Two coins are at equal distances from your eye. One is under 40 cm of
water, the other under 40 cm of glass. Which coin appears closer? ANS:
The one under the glass
13.
What type of image is formed when an object is placed at a distance of 1.5
focal length from a convex mirror? ANS: erect and virtual
14.
For a converging lens, a ray is arriving parallel to the optic axis ANS:
passes through the principal focal point
15.
A cannon recoils while firing a cannonball. The speed of the canon’s recoil
is relatively small because the ANS: cannon has much more mass
than the cannonball
16.
My 200 Kg sister runs at 3 m/s towards a 100 kg Twinkie that is at rest to
capture it for lunch. After she grabs the twinkie, the two move forward at
(in m/s) ANS: 2
17.
90 m per 3 seconds is ____ m/s? ANS: 30
18.
Vector and scalar quantities differ in that scalars only have ANS:
magnitude
19.
If my sister is somehow dropped off a skyscraper 245 high, how long will it
take for her to hit the ground? ANS: 7
20.
If the sun is 150 million km away from the earth, how long does it take
sunlight to reach the earth? ANS: 500 s
21.
I build a big cannon that propels my sister 45 m straight up. What is her
total time in seconds in the air when I shoot her? ANS: 6
22.
Light is the Radiant Energy that provides: ANS: Visual Sensation?