08/25/23

Chapter 6 Question Help

Picnickers see a lightning flash and hear the resulting thunder 9.0 s later. If the storm is traveling at a rate of 15 mi/h, then how long in minutes do the picnickers have to gather their things,... more
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08/16/23

Chapter 2 Physical Science
Ch 2 Discussion11 unread reply.11 reply.Answer the questions below, after reading Chapter 2 "Motion". Make sure that you give your answer in a clear and justified manner, providing necessary... more
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08/16/23

5[2(m+4)+8(m-7)]=2[3(5+m)-(21-3m)]
Explain everything, please. It's so long I kept getting lost.
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08/08/23

I need help with this math problem ASAP! Please help
Area of a trapezium is 160 cm2. The parallel sides are 18cm and 14cm. Find the distance between the parallel sides.
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08/03/23

Two particles bounce off each other and continue moving in different directions.
Two particles bounce off each other and continue moving in differentdirections. The first particle's direction is defined by ~v = 6^i-^j+^k andthe second particle's direction is defined by ~w =... more
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08/03/23

digital systems physics
Draw a block diagram of a domestic central heating system which has the following elements: A thermostat which has a dial which is set to the required temperature and has an input of the actual... more
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08/01/23

Hi! I was solving this problem and then stopped because I didn't know how to solve it. Someone please help asap.
Two boats leave the same dock at the same time, one travelling due west at 9 miles per hour and the other due north at 15 miles per hour. How many miles apart are the boats after three hours?
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07/30/23

two blocks of mass 10 kg and 4 kg are placed over the surface of a lift accelerating upwards with acceleration 2m/s² contact force between the blocks is equal to​
can you show a way using pseudo force too?thankyou
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07/30/23

An apartment has the dimensions 18 m by 9 m by 6 m. The temperature is 20°C, and the relative humidity is 54 percent. What is the total mass (in kg) of water vapor in the air in the apartment?
Please provide the best equation for calculating this for future reference.Answer is in kg
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07/30/23

An aluminum wing on a passenger jet is 38 m long when its temperature is 21°C. At what temperature would the wing be 8 cm (0.08 m) shorter?
Please Note: The proposed Coefficient for Aluminum per this textbook is listed as 25 x 10-6/C Please provide the Equation best used to calculate this for similar questions in the future.
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07/29/23

Determine the vertical positions of the ball for every interval of 1s until 10.0 seconds.
Shelley threw a tennis ball upward near the edge of a cliff that is about 100 meters above sea level. Suppose the ball was thrown with a speed of 30.1 m/s. Determine the vertical positions of the... more
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07/21/23

energy and society
State whether each of the following statements describes alpha particles, beta particles, or gamma radiation: (6 marks)a) The largest of the three.b) The most penetrating of the three.c) Of the... more
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07/17/23

physics forces unit
An intergalactic space traveler has discovered a planet that has a mass of 6.0 x 10^23 kg. The force of gravity acting on a 2 kg mass on the surface of the planet is 960 N. What is the radius of... more
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07/16/23

Voltage - Physics 152 (or Phys 2) question
In a series circuit, a generator (1400 Hz, 14.0V) is connected to a 12.0-Ω resistor, a 3.90-µF capacitor, and a 5.90-mH inductor. Find the voltages across (a) the resistor, (b) the capacitor, and... more
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07/16/23

Average power - Physics 152 (or Phys 2) question
The resistor in a series RCL circuit has a resistance of 94.0 Ω, while the rms voltage of the generator is 6.00 V. At resonance, what is the average power delivered to the circuit?
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07/14/23

newton's law of motion
A fully loaded Saturn V rocket has a mass of 2.92 x 106 kg. Its engines have a thrust of 3.34 x 107 N. a. What is the downward force of gravity on the rocket at blast-off? b. What is the unbalanced... more
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07/08/23

College Algebra
The​ half-life of radium is 1690 years. If 30 grams are present​ now, how much will be present in 450 ​years?
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07/06/23

Calculate the force and coefficient of static friction
A 90 kg Elton John is trying to keep a 310 kg piano from accelerating down a ramp inclined at 35°. The kinetic co-efficient of friction between the piano and the ramp is 0.25. a) Calculate the... more
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06/27/23

degree measure of each angle of a triangle
In the triangle below, suppose that =m∠A+x7°, =m∠B−6x3°, and =m∠C4x°.Find the degree measure of each angle in the triangle.
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06/27/23

rewrite these please i need help
Rewrite the equation in proper Standard Form. Equation: 1/4x−3/4y=−3 Slope-Intercept Form: y=−3x−5
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06/27/23

write an equation in slope intercept (4,7) and has a slope of 5/4
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06/26/23

Find the speed and direction of the balls after collision.
A 1.5 kg ball moving at 2 m/s to the right collides head on with a 1kg ball moving at 3 m/s to the left. The coefficient of restitution is 0.7. Find the speed and direction of the balls after... more
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06/23/23

Adiabatic changes of state. Final T
In diesel engines, the ignition temperature is reached by compressing the diesel/air mixture in the piston (self-ignition). The mixture, whose pressure initially corresponds to the normal pressure... more
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06/21/23

What is missing from the Standard Model that the Higgs Field provides for?
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06/17/23

What is its displacement (in meters) from the initial moment to t = 7.50s?
An object's initial velocity is 1.34m/s in the +x direction. It slows down with a constant acceleration whose magnitude is 1.49m/s^2. After it reaches a momentary stop it reverses its direction of... more
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