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3 years ago

For an object to be in projectile motion, what force must be acting on it

Physics

1 answer:

Lina20 [59]3 years ago

3 0

Answer:

In projectile motion, only the force of gravity (weight) acts on the object.

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How do scientists know the true environmental lapse rate in a column of air?

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With weather ballons carry instruments to measure the temperature ,pressure,wind direction and wind speed

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3 years ago

The Earth's atmosphere is divided into five layers. In which layer does all life exist? A) exosphere B) mesosphere C) stratosphe

lana66690 [7]

D) Troposphere is the correct answer.
The troposphere holds all life.

I hope this helped!

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3 years ago

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A proton, traveling with a velocity of 1.6 × 106 m/s due east, experiences a maximum magnetic force of 8.0 × 10-14 N. The direct

uranmaximum [27]

Answer:

The magnitude of magnetic field is 0.312 T and direction of the magnetic field is out of the page.

Explanation:

Given:

Velocity of proton $v = 1.6 \times 10^{6}$ $\frac{m}{s}$

Magnetic force $F = 8 \times 10^{-14}$ N

Charge of proton $q = 1.6 \times 10^{-19}$ C

The magnetic force experience by proton in magnetic field is given by,

$F =qvB \sin \theta$

Here magnetic force experienced by proton is maximum so we take $\sin \theta = 1$

$F = qvB$

$B = \frac{F}{qv}$

$B = \frac{8 \times 10^{-14} }{1.6 \times 10^{-19} \times 1.6 \times 10^{6} }$

$B = 0.312$ T

According to the left hand rule the direction of magnetic field is out of the page.

Therefore, the magnitude of magnetic field is 0.312 T and direction of the magnetic field is out of the page.

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3 years ago

An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 V for 0.65 ms. The resistance of t

Firlakuza [10]

Answer:

a) Current = 11 mA

b) Energy = 66 mJ

c) Power = 101.54 W

Explanation:

a) Voltage, V = IR

Voltage, V = 6 V, Resistance, R = 550 Ω

Current, I $=\frac{6}{550}=0.011A=11mA$

b) Energy = Current x Voltage = 6 x 0.011 = 0.066 J = 66 mJ

c) $\texttt{Power=}\frac{Energy}{Time}=\frac{0.066}{0.65\times 10^{-3}}=101.54W$

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2 years ago

Which point or points on the image below show constructive interference of light? *

vampirchik [111]

B and D hope im right :))

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2 years ago

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