PHYSICS HIGH SCHOOL

When measuring current, always place the meter ina. series with the circuit.
c. the highest DC volts position.
b. the highest AC volts position.
d. parallel with the circuit.

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Answer 1
Answer: d. parallel with the circuit

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The main difference between speed and velocity involves A. gravity.B. distance.C. weight.D. direction.
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Halving the kelvin temperature of a gas in a rigid container decreases the gas pressure by one half. a. true
b. false

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This statement is true

Firearms are typically found in which way

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Gunshots Are Found By Fingerprints Or Gunshot Residue Hope It Helps☺️

two small balls are suspended on parallel threads of the same length so that they touch each other in the vertical position. the mass of the first ball is 0.4kg and the mass of the second ball is 200g. the first ball is deflected so that its centre of mass rises to a height of 6cm and it is then released. to what maximal height will the 200g ball rise if the collision is elastic?

Answers

Answer: 12cm

Explanation:

Since first ball is raised to a height h1= 6cm, it gains a potential energy(PE1). On release, this PE1 is converted to kinetic Energy (KE1). This KE1 impact it energy on ball 2 ans it rise also. Since collision is elastic.

KE1 = KE2 ....> PE1 = PE2

m1 ×g × h1 = m2 × g× h2

h2 = m1×h1/m2

h2 = 0.4 × 0.06/0.2

h2 = 0.12m = 12cm

NEED ASAP PLEASE !! Billy drops a water balloon from the roof of his house. Since the balloon began with an original velocity of zero, how far above ground was the balloon dropped if it took 2.5 seconds to hit the ground?

A. 30.6 m
B. 122.5 m
C. 12.3 m
D. 49.0 m

Answers

The formula you want is:

           Distance = (1/2) (gravity) (time)²

                           =  (1/2) (9.8 m/s²) (2.5 sec)²

                           =    (4.9 m/s²)  (6.25 sec²)

                           =            30.6 meters

An element can be identified by its spectrum. True False

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True. Even though some elements have very similar spectrums that are not easy to tell apart so need to be examined carefully.

Answer: True on odyssey

Explanation:

A wave with a period of 0.008 second has a frequency of

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The frequency of a wave is the reciprocal of its period.

A period of 0.008 sec means a frequency of

         1 / 0.008 sec  =  125 per sec .  (125 Hz)

A wave with a period of 0.008 second has a frequency of

1 /.008 = 125 Hz
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