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Phoenix [80]
3 years ago
13

What is an expression for the vertical component of this vector?

Physics
1 answer:
grandymaker [24]3 years ago
4 0
The correct choice is D .
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A body accelerate uniformly from rest at the rate of 3meters per seconds for 8 sec . calculate the distance covered by the body
pishuonlain [190]

Answer:

96 m

Explanation:

Given:

v₀ = 0 m/s

a = 3 m/s²

t = 8 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (0 m/s) (8 s) + ½ (3 m/s²) (8 s)²

Δx = 96 m

3 0
3 years ago
A bowling ball traveling with constant speed hits pins at the end of a bowling lane 16.5m long. The bowler hears the sound of th
sweet-ann [11.9K]

Answer: The speed of the ball is 7.64 m/s.

Explanation:

The distance between the player and the pins is 16.5m

if the velocity of the ball is V, then the time in which the ball reaches the pins is:

T = 16.5/V

Now, after this point, the sound needs

T' = 16,5/340 = 0.049 seconds to reach the player, this means that the time in that the ball needs to reach te pins is:

2.65 s - 0.49s = 2.16s

Then we have:

T = 2.16s = 16.5/V

V = 16.5/2.16 m/s = 7.64 m/s

7 0
3 years ago
A 6.0-ω and a 12-ω resistor are connected in parallel across an ideal 36-v battery. What power is dissipated by the 6.0-ω res
Elena L [17]

Answer:

P = 216 Watts  

Explanation:

Given that,

Resistance 1, R_1=6\ \Omega

Resistance 2, R_2=12\ \Omega

Voltage, V = 36 V

We need to find the power dissipated by the 6 ohms resistor. In case of parallel circuit, voltage throughout the circuit is same while the current is different.      

Firstly, lets find current of the 6 ohms resistor such that,

V = IR

I=\dfrac{V}{R}\\\\I=\dfrac{36}{6}\\\\I=6\ A

The power dissipated by 6 ohms resistor is given by :

P=I^2R

P=6^2\times 6\\\\P=216\ W

So, the power dissipated across 6 ohm resistor is 126 watts.

8 0
3 years ago
A skater is using very low friction rollerblades. A friend throws a Frisbee at her, on the straight line along which she is coas
tino4ka555 [31]

Question:

(a) She catches the Frisbee and holds it.  

Answer:

The correct option is;

A perfectly inelastic collision

Explanation:

A perfectly inelastic collision is one in which there is maximum amount of loss of kinetic energy in the system. In a perfectly inelastic collision, the colliding members lose their initial speed and they stick together resulting in a loss of kinetic energy.

Since she catches and holds on to the Frisbee, the kinetic energy of the Frisbee is lost as she holds on to it so as to combine her mass to that of the Frisbee.

8 0
3 years ago
The median of a set of numbers can be found by using the __________
attashe74 [19]
The answer is D, the middle number. cause the median is found be arranging the numbers from smallest to largest and finding the one in the middle, if that makes any sense :/
3 0
4 years ago
Read 2 more answers
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