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Physics

Rene Callahan

Let theta denote the angular displacement of a simple pendulum oscillating in a vertical plane. If the mass of the Bob is m, then the tension in string is

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Physics

Abel Johnston

Why do hurricanes occur between June and November A. this is when water in the Atlantic ocean is warmest

b. this is when the currents around the equator are strongest

c. this is when the winds over the Atlantic ocean are strongest

d. this is when the water in the Atlantic ocean is coolest

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Physics

Volvo

A space probe is launched from Earth headed for deep space. At a distance of 10,000 miles from Earths center, the gravitational force on it is 381 pounds. What is the size of the force when it is at each of the following distances from Earths center?

A) 20,000 miles

B) 30,000 miles

C) 100,000 miles

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Physics

Madilyn

Why are the very first stars thought to have been much more massive than the sun? (a the clouds that made them were much more massive than todays star-forming clouds. (b the temperatures of the clouds that made them were higher because the clouds consisted entirely of hydrogen and helium. (c star-forming clouds were much denser early in time?

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Physics

Arianna Garrett

A proton moving at 5.00 106 m/s through a magnetic field of magnitude 1.78 t experiences a magnetic force of magnitude 7.40 10-13 n. what is the angle between the proton's velocity and the field? (enter both possible answers from smallest to largest. enter only positive values between 0 and 360.)

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Physics

Patsy

An inductor (L), a resistor (R), a battery (V), and a switch are all connected in a single loop series circuit. Immediately after the switch is closed,

a. The current in the circuit is L/R.

b. the current in the circuit is zero because the inductor resists the change in its current state.

c. The current in the circuit is V/R.

d. The current in the circuit is zero because the circuit contains a resistor.

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Physics

Bryant Rivas

Which of the following equations can be used to directly calculate an object's impulse?

A) p = mvt

B) p = m/v

C) p = FΔt

D) Δp = FΔt

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Physics

Sophia Foley

Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 40 mph and half the time at 40 mph and half the time at 60 mph. a. How long does it take Julie to complete the trip to Grandmother's house? b. How long does the return trip take?

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Physics

Paula Yoder

A rocket passing the earth with high speed will look shorter for the stationary observer measuring the size on earth than traveler in rocket. O True O False

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Physics

Anna Daniels

Which characteristic of northern renaissance artworks do albrecht dürer and pieter bruegel the elder share? a. they rarely include symbols or have hidden meanings. b. they depict landscapes instead of portraits, religious scenes, or genres. c. they show royalty instead of peasants. d. they show great attention to detail and texture. e. the figures have ideal beauty. f. the space appears flattened.

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Physics

Kingston Lutz

1. Hydrogen gas and oxygen gas, when combined, form liquid water. What type

of change is this, and why?

A) Chemical change, because a gas is produced.

B) Physical change, because it is changing from gas to liquid.

C) Chemical change, because a new substance is produced.

D) Physical change, because atoms are not gained or lost.

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Physics

Jared Underwood

The law of conservation of energy states ...

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Physics

Pham

How much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m horizontally with a force of 5.00 N? Express your answer in joules and kilocalories.

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Physics

Guest

Number of electrons in outer ring for phosphorus

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Physics

Cierra

How is mass connected to matter?

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