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bazaltina [42]
3 years ago
11

You perform an experiment in which you measure the distance traveled by a projectile fired with different initial velocities. Wh

ich piece of technology is appropriate for gathering the experimental data you need?
A. Scale
B. Computer
C. Tape measure
D. Thermometer
Physics
2 answers:
aleksklad [387]3 years ago
5 0

The correct answer is C. Tape measure

Explanation:

In an experiment, the technology or instrument that is appropriate for gathering experimental data mainly depends on the factors or variables to be studied. In this way, a scale would be useful for gathering information related to mass; a thermometer for gathering information related to temperature; a computer for analyzing numerical information or large amounts of information and a tape measure in the case of gathering information about distance. This implies if you are measuring the distance of a projective with different initial velocities the best is to use a tape measure as this measures distance in millimeter, centimeters, and meters and therefore it is useful to know in numbers the difference of each projectile.

Vlad [161]3 years ago
4 0

During the motion of projectile we know that the distance traveled by the object is in the range of meter

So the object will move to certain distance at different velocity which we have to measure by a device which has range of distance from 0 meter to several meters

So the correct device to measure it is

<em>C. Tape Measure</em>

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You need to find the mass of water in the pool.
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A proton and an electron are placed in an electric field. Which undergoes the greater acceleration?
iren2701 [21]

Newton's 2nd law:

Fnet = ma

Fnet is the net force acting on an object, m is the object's mass, and a is the acceleration.

The electric force on a charged object is given by

Fe = Eq

Fe is the electric force, E is the electric field at the point where the object is, and q is the object's charge.

We can assume, if the only force acting on the proton and electron is the electric force due to the electric field, that for both particles, Fnet = Fe

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a = Eq/m

We will also assume that the electric field acting on the proton and electron are the same. The proton and electron also have the same magnitude of charge (1.6×10⁻¹⁹C). What makes the difference in their acceleration is their masses. A quick Google search will provide the following values:

mass of proton = 1.67×10⁻²⁷kg

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6 0
3 years ago
On a straight, level, two-lane road, two cars moving in opposite directions approach and pass each other. Car A is in the eastbo
ludmilkaskok [199]

Answer:

a) 42 m/s, positive direction (to the east), b) 42 m/s, negative direction (to the west).

Explanation:

a) Let consider that Car A is moving at positive direction. Then, the relative velocity of Car A as seen by the driver of Car B is:

\vec v_{A/B} = \vec v_{A} - \vec v_{B}\\\vec v_{A/B} = 11 \frac{m}{s} \cdot i + 31 \frac{m}{s} \cdot i\\\vec v_{A/B} = 42 \frac{m}{s} \cdot i

42 m/s, positive direction (to the east).

b) The relative velocity of Car B as seen by the drive of Car A is:

\vec v_{B/A} = \vec v_{B} - \vec v_{A}\\\vec v_{B/A} = -31 \frac{m}{s} \cdot i - 11 \frac{m}{s} \cdot i\\\vec v_{B/A} = - 42 \frac{m}{s} \cdot i

42 m/s, negative direction (to the west).

5 0
3 years ago
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