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3 years ago

I need Help ASAP, and actually help, not just for the points.

Physics

2 answers:

UNO [17]3 years ago

7 0

Answer:

750 force

Explanation:

I have never worked with force but I can guess using the formula. 1500, which is the mass, multiplied by the acceleration, 0.5, would equal 750 force, if being applied by the equation listed, Force= mass×acceleration

Zigmanuir [339]3 years ago

7 0

Force is 7500 1500 multiplied by 5 is 7500

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An airplane travels at 950 km/h. how long does it take to travel 1.00 km

Reptile [31]

First calculate the <em>percentage of one hr</em> it takes. You can do this by dividing the distance by the velocity. The general formula for this is:

$D = v *t$

always remember to make sure your units are the same.

so that's 1km by the 950km/h velocity.

1/950 = 0.0010526 hrs

Then multiply that answer by 3600 (<em>the number of seconds in 1 hr</em>) to find how many seconds this is.

0.0010526 * 3600 = 3.789 seconds

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3 years ago

If a truck has a mass of 7,692 kg and travels at a speed 51 m/s what is the momentum of the truck

Sever21 [200]

Answer:

Explanation:

Given the following data;

Velocity = 51 m/s

Mass = 7,692 kg

To find the momentum;

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

$Momentum = mass * velocity$

Substituting into the equation, we have;

Momentum = 7692 × 51

Momentum = 392292 Kgm/s

7 0

3 years ago

A seesaw is an example of a first class lever, true or false?

kramer

My guess is false because a seesaw goes up and down on both sides, while a lever is when u pick something up and down.

sorry if I'm wrong but I hope it helps :)

6 0

3 years ago

Which of the changes to a voltaic cell of the general form X + + Y ⟶ X + Y + X++Y⟶X+Y+ would result in an increase in the cell p

vekshin1

The given question is incomplete. The complete question is as follows.

Which of the following changes to a voltaic cell of the general form

X+ + Y ->X + Y+ would cause an increase in potential? (more positive Ecell)

a. An increase in active ion concentration at the cathode.

b. An increase in active ion concentration at the anode.

c. An increase in temperature where K/Q > 1

d. An increase in temperature where K/Q < 1

Explanation:

In an electrochemical cell, the potential difference present within the two half cells is known as cell potential.

Formula for cell potential according to Nernst equation is as follows.

$E^{o}_{cell} = E^{o} - \frac{2.303RT}{nF} log (\frac{\text{Anodic ion conc.}}{\text{Cathodic ion conc.}})$

So, more is the ion concentration at the cathode smaller will be the value deducted from $E^{o}$ . Hence, more positive the value of $E^{o}_{cell}$ comes out.

Potential of a cell will increase under following conditions:

Whenever at the cathode there will occur an increase in concentration of active ion then there will also occur an increase in cell potential.

When the ratio of K is to Q (that is, \frac{K}{Q}) is greater than 1 then there will occur an increase in the cell potential.

Thus, we can conclude that following changes will lead to an increase in cell potential:

An increase in temperature where K/Q > 1

An increase in active ion concentration at the cathode.

5 0

3 years ago

Can someone explain each of these?

docker41 [41]

Answer:

Machine - A device consisting of fixed and moving parts that modifies mechanical energy and transmits it in a more useful form.

Mechanical advantage - Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system.

Inclined Plane - A plane set at an angle to the horizontal, especially a simple machine used to raise or lower a load by rolling or sliding.

Wedge - A piece of material, such as metal or wood, thick at one edge and tapered to a thin edge at the other for insertion in a narrow crevice, used for splitting, tightening, securing, or levering.

Screw - A cylindrical rod incised with one or more helical or advancing spiral threads, as a lead screw or worm screw.

Lever - A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other.

8 0

3 years ago