As heat is added to a substance undergoing a phase change, the temperature remains constant because the energy is being used to

9. True or False. The Rift Valley is where the Pacific plate meets the Saudi Arabian plate.

vagabundo [1.1K]

Answer: true

Explanation: this is were it is located

5 0

3 years ago

Electromagnetic radiation Group of answer choices can only travel in a dense medium. has only the properties of waves. can behav

Svetach [21]

Answer:

Can behave both as a particle and wave

Explanation:

Electromagnetic wave has the electric and magnetic wave propagating/oscillating together. Electromagnetic waves such as x Ray, gamma ray, radio waves are important in health care and modern information technology .

Electromagnetic waves have particles such as the electrons and protons. They are responsible for the existence of electromagnetic waves by the charged particles vibrating. Electromagnetic waves behave as waves majority of the time. Electromagnetic energy is released in distinct packs of energy called photons which are particles but acts like waves.

7 0

3 years ago

A hockey puck glides to the right across the ice at a constant speed.

leonid [27]

A hockey puck glides to the right across the ice

6 0

3 years ago

Read 2 more answers

A race car travels 40 m/s around a banked (45° with the horizontal) circular (radius = 0.20 km) track. What is the magnitude of

OLEGan [10]

Answer:

c) $F_{net} = 0.640 kN$

Explanation:

As we know that resultant force is the net force that is acting on the system

As per Newton's II law we know that net force is product of mass and acceleration

so we will have

$F_{net} = ma$

here we know

m = 80 kg

for circular motion acceleration is given as

$a_c = \frac{v^2}{R}$

$a_c = \frac{40^2}{200} = 8 m/s^2$

now we have

$F_{net} = 80 \times 8$

$F_{net} = 640 N$

$F_{net} = 0.640 kN$

7 0

4 years ago

A 60\ W60 W light bulb (normally ran at 115\ V115 V) is attached to a transformer. The voltage source in the transformer is 35\

Aleks [24]

Answer:

137 turns

Explanation:

The light is rated 60 W and normally operated at 115V,

using electrical power formula;

P (power) = I (currents in Ampere) × V ( potential difference in Volts)

substitute the power and V mentioned above into the formula

60 = I × 115

I = 60 / 115 = 0.522 A

with the Current above we can calculate the voltage expected for 100W in the secondary coil

P = I × V

100 = 0.522 × V

V = 100 ÷ 0.522 = 191.6 Volts is the voltage expected by the secondary coil of the transformer to deliver

using transformer formula with Vs being Voltage in the secondary coil and Vp voltage in primary coil, Ns being number of turns in the secondary coil and Np number of turns in the primary coil.

Vs = 191.6 volts, Vp = 35 volts Np = 25 and Np= ?

Vp/ Vs = Np / Ns

make Ns subject of the formula

Ns = Vs × Np / Vp

Ns = 25 × 191.6 / 35 = 136.9 turns approx 137 turns

4 0

3 years ago